Use Indirect proof for the following problem.

1. P v (Q . P)
2. P > R / R

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.

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

When the ball has traveled a distance of