Which equation represents a population of 250 animals that decreases at an annual rate of 21% ? A. p = 250(1.21)
B. p = 250(1.79)
C. p= 250(0.79)
D. p=250(0.21)

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.

Simplify the expression 10/11(22z) + (a+5) -1

The tile along the edge of a triangular community pool needs to be replaced? ?