SHIPPING A shipping company will ship a package for $7.50 when the volume is no more than 15, 000 cubic centimeters. Grace needs to ship a package that is 3x - 5 centimeters long, 2x centimeters wide, and x + 20 centimeters tall.

a. Write a polynomial equation to represent the situation.

b. write and solve a system of equations.

c. what should the dimensions of the package be to have the maximum volume?