In the diagram shown on circle A, segment CD is tangent to the circle at point D. If CD  23 and CA  28,
then which of the following is closest to m C ?

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.