Somebody please help ASAP!

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

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.

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1