1 (1 point) Solve the problem. It costs $16 per hour plus a flat fee of $31 for a plumber to make a house call. What is an equation of the form for this situation? Question 1 options: a) y= 16x + 31 b) y= 31x c) y= 16x d) y= 31x + 16 Save Question 2 (1 point) Solve the problem. Suppose a cost-benefit model is given by where C is the cost in thousands of dollars for removing p percent of a given pollutant. Find C(75) to the nearest dollar and interpret it. Question 2 options: a) b) $20,100; It will cost $20,100 to remove 75% of the pollutant. $3000; It will cost $3000 to remove 75% of the pollutant. c) $5025; It will cost $5025 to remove 0.75% of the pollutant. d) $6700; It will cost $6700 to remove 0.75% of the pollutant. Save Question 3 (1 point) Determine whether or not the relationship shown in the table is a function. Does the table define weight as a function of the day in January? Question 3 options: a) Ye s b) N o Save Question 4 (1 point) Determine whether the given relationship defines a function. If so, identify the independent and dependent variable, and why the relationship is a function. The salary s of an employee on her hiring date d. Question 4 options: Yes; d, s; there is one salary s on the hiring date d. a) b) N o Save Question 5 (1 point) Decide whether or not the set of ordered pairs defines a function. {(-6, -1), (-6, -7), (-1, 7), (3, 1), (10, -8)} Question 5 options: a) Ye s b) N o Save Question 6 (1 point) Evaluate the function. Given f(x) = x2 + 2x - 4, find f(-3). Question 6 options: a) 1 1 b 7 ) c) 1 9 d) -1 Save Question 7 (1 point) Find the domain of the function. y=7Question 7 options: a) (-, ) b) (7, ) all real numbers except 0 c) d) (-, 4) Save Question 8 (1 point) Write the equation of the line whose graph is shown. Question 8 options: a) b) c) d) y= 4x 7 y= x+4 y= -4x 7 y= x-7 Save Question 9 (1 point) Write an equation of the line through the given point with the given slope. Write the equation in slope-intercept form. (2, 0); m = 4 Question 9 options: a) y= -2x + 4 b) y= -4x + 2 c) y= 2x + 4 d) y= 4x 8 Save Question 10 (1 point) Write the equation of the line using the information given about its graph. Slope - , y-intercept Question 10 options: a) y=- x+ b) y=- x- c) y= x+ d) y= x- Save Question 11 (1 point) Write the slope-intercept form of the equation for the line passing through the given pair of points. (0, 3) and (2, -2) Question 11 options: y=- a) x- y=b) x+ 3 c) d) y= x+3 y= x- Save Question 12 (1 point) Write the equation of the line with the given conditions. passing through (-1, -7) and perpendicular to the line with equation 4x + 5y = 31 Question 12 options: a) y=- x- b) y= x- c) y= x+ d) y=- x- Save Question 13 (1 point) Find the x- and y-intercepts of the graph of the given equation, if they exist. Then graph the equation. 5y = -35 + 7x Question 13 options: x: 5; y: 7 a) b) x: -7; y: 5 x: 7; y: 5 c) x: 5; y: -7 d) Save Question 14 (1 point) Find the slope of the line (if it exists) and the y-intercept (if it exists). 4x - 8y = -8 Question 14 options: a) b) c) d) Save Question 15 (1 point) Slope 2, yintercept (0, -1) Slope intercept (0, -1) Slope -2, yintercept (0, 1) Slope intercept (0, 1) Find the slope of the line. Question 15 options: a 1 ) b 2 ) c) 2 d) Save Question 16 (1 point) Graph the function with a graphing utility. y = 3x2 Question 16 options: a) b) c) d) Save Question 17 (1 point) Graph the equation. 4x - y = 0 Question 17 options: a) b) c) d) Save Question 18 (1 point) Solve the problem. In a certain town the annual consumption, b, of beef (in pounds per person) can be estimated by where t is the number of years since 2010. Find and interpret the t-intercept of the graph of this function. Question 18 options: a) 74; If this trend co consumption of be pounds per perso b) 74; The annual consum this town was 74 pound 2010. c) 37; If this trend co consumption of be pounds per perso d) Save 37; The annual consum this town was zero pou 2010