Please help meee, at least answer question C The function C(r) =-2x?+38x + 40 models the sales, in hundreds of
millions of dollars, of compact discs for years since 1990.

Part A: rewrite the function to reveal when cells of compact discs are 0$

Part B: what are the zeros of the function?

Part C: use the context to interpret the zeros

Larger pets need to be transported in larger portable kennels. using a graphing calculator and the relationship between the width, length, and height, find the dimensions of a portable kennel whose volume is 7.4 ft3. the dimensions of a portable kennel can be expressed as width x, length x + 0.4, and height x − 0.2? what are the dimensions of a portable kennel with a volume of 7.4 ft3? use a graphing calculator to solve. round the dimensions to the nearest tenth.