Question
B)The volume of the box, V(x), is given by the cubic function: ?(?) = ?(20 ? 2?)(16 ? 2?) Explain how this function has been
B)The volume of the box, V(x), is given by the cubic function: ?(?) = ?(20 ? 2?)(16 ? 2?) Explain how this function has been derived. Fully expand this cubic function. c) Sketch the graph of this function, without technology, and estimate the value of x that will maximize the volume of the box. d) What is the practical domain of this polynomial function? Explain your answer. 3. Graph and Interpret a Cubic Function The following function, ?(?) = (? ? 2.6)(? ? 4.5)2 models the annual profit in $ millions of a mid-size marketing firm with t in years from start-up in 2012 (t = 0 is the year 2012). Sketch the graph of this function, without technology, and then answer the questions that follow . a) Is the profit increasing or decreasing after 2017 (t = 5)? _______________________ Explain how you know this from the equation of the function? b) For what values of t is the profit exactly zero? t = _____________________. c) The practical domain is t ? [0,8]. State the interval for t in which the profit is negative in the practical domain: t ? _____________ How do you know this from the equation of the function?
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started