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mathematics
college algebra graphs and models
Questions and Answers of
College Algebra Graphs And Models
You have 200 feet of fencing to enclose a rectangular plot that borders on a river. If you do not fence the side along the river, find the length and width of the plot that will maximize the area.
Among all pairs of numbers whose difference is 24, find a pair whose product is as small as possible. What is the minimum product?
How does the linear factorization of f(x), that is,show that a polynomial equation of degree n has n roots? f(x) = an(x c₁)(x c₂) (x - Cn), − − · -
In Exercises 65–72, complete graphs of polynomial functions whose zeros are integers are shown.a. Find the zeros and state whether the multiplicity of each zero is even or odd.b. Write an equation,
In Exercises 66–69, determine whether each statement makes sense or does not make sense, and explain your reasoning.When performing the division (x5 + 1) , (x + 1), there’s no need for me to
In Exercises 57–80, follow the seven steps to graph each rational function.Seven Steps are given below Strategy for Graphing a Rational Function The following strategy can be used to
In Exercises 65–72, complete graphs of polynomial functions whose zeros are integers are shown.a. Find the zeros and state whether the multiplicity of each zero is even or odd.b. Write an equation,
In Exercises 57–80, follow the seven steps to graph each rational function.Seven Steps are given below Strategy for Graphing a Rational Function The following strategy can be used to
Solve each inequality in Exercises 65–70 and graph the solution set on a real number line. 3 x + 3 V 3 x 2
Solve each inequality in Exercises 65–70 and graph the solution set on a real number line. 1 x + 1 2 x - 1
In Exercises 65–72, complete graphs of polynomial functions whose zeros are integers are shown.a. Find the zeros and state whether the multiplicity of each zero is even or odd.b. Write an equation,
You have 50 yards of fencing to enclose a rectangular region. Find the dimensions of the rectangle that maximize the enclosed area. What is the maximum area?
Describe how to use Descartes’s Rule of Signs to determine the possible number of positive real zeros of a polynomial function.
You have 80 yards of fencing to enclose a rectangular region. Find the dimensions of the rectangle that maximize the enclosed area. What is the maximum area?
Describe how to use Descartes’s Rule of Signs to determine the possible number of negative roots of a polynomial equation.
In Exercises 66–69, determine whether each statement makes sense or does not make sense, and explain your reasoning.The only nongraphic method that I have for evaluating a function at a given value
Why must every polynomial equation with real coefficients of degree 3 have at least one real root?
In Exercises 66–69, determine whether each statement makes sense or does not make sense, and explain your reasoning.I found the zeros of function f, but I still need to find the solutions of the
In Exercises 65–72, complete graphs of polynomial functions whose zeros are integers are shown.a. Find the zeros and state whether the multiplicity of each zero is even or odd.b. Write an equation,
Solve each inequality in Exercises 65–70 and graph the solution set on a real number line. x²-x-2 4x + 3 2 X > 0
Explain why the equation x4 + 6x2 + 2 = 0 has no rational roots.
In Exercises 70–73, determine whether each statement is true or false. If the statement is false, make the necessary change(s) to produce a true statement.If a trinomial in x of degree 6 is divided
Solve the rational inequality x(x-3) x + 2 IV
Graph y = f(x). You may want to use division, factoring, or transformations as an aid. Show all asymptotes and "holes." f(x) 2x² + 9x + 9 2x² + 7x + 6
Graph y = f(x). You may want to use division, factoring, or transformations as an aid. Show all asymptotes and "holes." f(x) = ²-4
Graph y = f(x). You may want to use division, factoring, or transformations as an aid. Show all asymptotes and "holes." f(x)= -2x² + 11x r - 5x + 6 14
Solve the rational inequality (x + 1)² x-2 VI ≤0
Graph y = f(x). You may want to use division, factoring, or transformations as an aid. Show all asymptotes and "holes." f(x) = 2x²-3x - 14 x²2x-8
Solve the rational inequality 농 >0
Complete the following.(a) Find any slant or vertical asymptotes.(b) Graph y = f(x). Show all asymptotes. f(x) x² + 1 x + 1
Complete the following.(a) Find any slant or vertical asymptotes.(b) Graph y = f(x). Show all asymptotes. f(x) 2x² - 5x-2 x-2
Solve the rational inequality 3- 2x 1 + x
Solve the rational inequality 2x (x-2) V >0
Complete the following.(a) Find any slant or vertical asymptotes.(b) Graph y = f(x). Show all asymptotes. f(x) = x² - 2x + 2 x+2
Complete the following.(a) Find any slant or vertical asymptotes.(b) Graph y = f(x). Show all asymptotes. f(x) = 0.57 - 5 x-3
Solve the rational equation and associated inequalities. Use interval notation. (a) (b) (c) - 3 x+5 X -3 x+5 x-3 x+5
Solve the rational inequality x + 1 4- 2x ≥ 1 A
Complete the following.(a) Find any slant or vertical asymptotes.(b) Graph y = f(x). Show all asymptotes. f(x) = 4x² 2x - 1
Complete the following.(a) Find any slant or vertical asymptotes.(b) Graph y = f(x). Show all asymptotes. f(x) x² + 2x + 1 x-1
Solve the rational equation and associated inequalities. Use interval notation. (a) (b) (c) x+ 2 x x+ 2 x- 1 x+ 2 = 1 >1
Solve the rational inequality (x + 1)(x - 2) x + 3
Solve the rational inequality 2x - 5 5 -1 ≥0
Solve the rational equation and associated inequalities. Use interval notation. (a) (b) (c) 6 x + 2 - x x 9- |-> ? + + 3 9- x-6 -1 x + 2 I- <
Solve the rational equation and associated inequalities. Use interval notation. (a) (b) x-4 +1 x-4 x+1 4
Solve the rational inequality I 5 X + 2 ≥ 0
Complete the following.(a) Find any slant or vertical asymptotes.(b) Graph y = f(x). Show all asymptotes. f(x) = 2x² + 3x + 1 x-2
Solve the rational inequality 5-x x²-x-2 -
Solve the rational inequality 3 2-x V X 2+x
Solve the rational inequality 1 x-3 VI 5 x-3
Complete the following.(a) Find any slant or vertical asymptotes.(b) Graph y = f(x). Show all asymptotes. f(x) 4x²+x-2 4x - 3
Solve the rational inequality 1 x + 1 V X 1
Graph f. Use the steps for graphing a rational function described in this section. f(x) = 2x - 4 x-1
Solve the rational inequality 2 x x + 2 VI
Sketch a graph of an even linear function.
Solve each equation and inequality. Use interval notation. (a) (b) (x-2)(2)-(2x + 1)(1) (x - 2)² (x-2)(2)-(2x + 1)(1) (x - 2)² 0
Graph f. Use the steps for graphing a rational function described in this section. f(x) = x + 3 2x - 4
Solve each equation and inequality. Use interval notation. (b) (x² - 1)(1)-(x + 1)(2x) (x² - 1)² (x² - 1)(1)-(x + 1)(2x) (x² - 1)² = 0 >0
Graph f. Use the steps for graphing a rational function described in this section. f(x) = x-5 x +3
Graph f. Use the steps for graphing a rational function described in this section. x-4 1 + x = (x)ƒ
Graph f. Use the steps for graphing a rational function described in this section. f(x) = = x+2 x-3
Solve each equation and inequality. Use interval notation. (a) (b) (x² + 1)(2x) - (x² - 1)(2x) (x² + 1)² (x² + 1)(2x) - (x² + 1)(2x) (x² + 1)²
Graph f. Use the steps for graphing a rational function described in this section. f(x) = 4-2x 8-x
Suppose the average number of vehicles arriving at the main gate of an amusement park is equal to 10 per minute, while the average number of vehicles being admitted through the gate per minute is
Solve each equation and inequality. Use interval notation. (a) (b) - - (x² − 1)(3) — (3x − 1)(2x) (x² - 1)² (x² -1)(3)(3x-1)(2x) (x² - 1)² = 0 50
Solve each equation and inequality. Use interval notation. (a) (b) (2x + 1)(2x) - (x² + 1)(2) (2x + 1)² (2x + 1)(2x) - (x² + 1)(2) (2x + 1)² = 0 :0
If a car is traveling 50 miles per hour downhill, then the car's braking distance on a wet pavement is given bywhere x (a) Evaluate D(-0.1) and interpret the result. (b) What happens to the braking
A cost-benefit function C computes the cost in millions of dollars of implementing a city recycling project when x percent of the citizens participate, where (a) Graph C in [0, 100, 10] by [0, 10,
Graph f. Use the steps for graphing a rational function described in this section. f(x) = x-3 x + 4
An aluminum can is cubic being designed to hold a volume of 100π centimeters.(a) Find a formula for the volume V in terms of r and h. (b) Write a formula for a function S that calculates the
The grade x of a hill is a measure of its steepness. For example, if a road rises 10 feet for every 100 feet of horizontal distance, then it has an uphill grade of x = 10/100 or 10%. See the figure.
Graph f. Use the steps for graphing a rational function described in this section. f(x) = (x + 3)(x - 5) (x + 1)(x-4)
Graph f. Use the steps for graphing a rational function described in this section. f(x) x 4-)
Graph f. Use the steps for graphing a rational function described in this section. f(x) 5 6 - 3x 4 - х
Graph f. Use the steps for graphing a rational function described in this section. f(x) = 5x 1²-1
Graph f. Use the steps for graphing a rational function described in this section. f(x) = 2x + 1 x² + 6x + 8 -8
Graph f. Use the steps for graphing a rational function described in this section. f(x) = x² - 2x x² + 6x +9
Graph f. Use the steps for graphing a rational function described in this section. (x + 6)(x - 2) (x+3)(x-4)
Graph f. Use the steps for graphing a rational function described in this section. f(x) 11 3x² + 3x - 6 x²-x-12
Graph f. Use the steps for graphing a rational function described in this section. f(x) x² + 2x + 1 x²-x-6
Solve x2/2 - 2x = 3 to determine the traffic intensity .x when the average number of vehicles in line equals 3.
Find possible dimensions for a box with a volume of 196 cubic inches, a surface area of 280 square inches, and a length that is twice the width.
A cardboard box with no top and a square base is being constructed and must have a volume of 108 cubic inches. Let x be the length of a side of its base in inches. (a) Write a formula A (x) that
If a parking garage attendant can wait on 3 vehicles per minute and vehicles are leaving the ramp at x vehicles per minute, then the average wait in minutes for a car trying to exit is given by the
Graph each rational function by hand. Give the domain and range, and discuss symmetry. Give the equations of any asymptotes. f(x) 1 x + 3
A parking garage attendant can wait on 40 cars per hour. If cars arrive randomly at a rate of x cars per hour, then the average line length is given bywhere the x-values are limited to 0 ≤ x (a)
Graph each rational function by hand. Give the domain and range, and discuss symmetry. Give the equations of any asymptotes. f(x) 1 x² + 2
You may have noticed that a relatively small percentage of people do the vast majority of postings on social networks. The rational function defined bymodels this participation inequality. In this
Graph each rational function by hand. Give the domain and range, and discuss symmetry. Give the equations of any asymptotes. f(x) = 2x² x² +1 X
The monthly average high temperature in degrees Fahrenheit at Daytona Beach, Florida, can be approximated bywhere x = 1 corresponds to January, x = 2 to February, and so on. Estimate graphically when
Graph each rational function by hand. Give the domain and range, and discuss symmetry. Give the equations of any asymptotes. f(x) = -2x² x² + 2
If the parking attendants can wait on 5 vehicles per minute, the average time T in minutes spent waiting in line and paying the attendant becomes (a) What is a reasonable domain for T? (b) Graph y
A container holds x balls numbered 1 through x. Only one ball has the winning number. (a) Find a function f that computes the probability, or likelihood, of not drawing the winning
The first minute is critical to a visitor's decision whether to stay or leave a website. The longer a person visits a website, the less likely it is that he or she will leave the page. If x
The concentration of a drug in a medical patient's bloodstream is given by 5 the formula where the input t is in hours, t ≥ 0, and the output is in milligrams per liter. (a) Does the
Slippery Roads The coefficient of friction x measures the friction between the tires of a car and the road, where 0 < x ≤ 1. A smaller value of x indicates that the road is more slippery. If a
If two parking attendants can wait on 8 vehicles per minute and vehicles are leaving the parking garage randomly at an average rate of x vehicles per minute, then the average time T' in minutes spent
Suppose that an insect population in millions is modeled bywhere x ≥ 0 is in months. (a) Graph f in [0, 14, 1] by [0, 14, 1]. Find the equation of the horizontal asymptote. (b) Determine the
Suppose that a construction zone can allow 50 cars per hour to pass through and that cars arrive randomly at a rate of x cars per hour. Then the average number of cars waiting in line to get through
Suppose that a parking attendant can wait on 40 cars per hour and that cars arrive randomly at a rate of .x cars per hour. Then the average number of cars waiting in line can be estimated by(a)
A cylindrical aluminum can is being manufactured so that its height h is 8 centimeters more than its radius r. Estimate values for the radius (to the nearest hundredth) that result in the can having
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