please help me if you can if your going to say I'm cheating i don't care cause i know I'm not thanks!!

What is 32+4 x (16 x 1/2) -2 show your work}

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

Which of the following is true for the relation f(x)=2x^2+1