Which of the following functions is graphed below? 15
10
5
-8
-6
-4
-2 0
2
4
6
8
O A. y- {x® -3,452
1x2 + 6, x2 2
C..3

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.