PLEASE HELP i know this is a lot but HELP The area, A, in square feet, of a rectangular storage bin in a warehouse is given by the function A(x) = −4x2+24x , where x is the width, in feet, of the storage bin.

Part A: Which of the following statements would be true? Show your work or explain how you found the solution.

a. The x-intercepts of the function are 0 and 4, which are lower bound and an upper bound for the possible values of the length of the storage bin.

b. The x-intercepts of the function are 0 and 4, which are a lower bound and an upper bound for the possible values of the width of the storage bin.

c. The x-intercepts of the function are 0 and 6, which are a lower bound and an upper bound for the possible values of the width of the storage bin.

d. The x-intercepts of the function are 0 and 6, which are a lower bound and an upper bound for the possible values of the length of the storage bin.

Part B: The process of completing the square can be used to calculate the width, in feet, of the storage bin that gives a maximum area. What is the missing value?