Frances has 4 square baking dishes. Each pan is 7 inches x 7 inches x 2 inches. Which expression will give her the total volume of the pan? A. 7^2 x 2
B. 7 x 2^4
C. (7 x 2 x 2) x 4
D. (7^2 x 2) x 4

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.