25 divided by 9 what is the remainder

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.

Simplify the expression 10/11(22z) + (a+5) -1

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?