7x- 2y = 5
X + 2y = -7

6x - 8 = 16 solve the following equation. then place the correct number in the box provided.

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 shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?