Solve the inequality

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.

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

Write a fraction less than 1, which has a denominator of 6 and is greater than 3/4 plz answer !