The sum of two numbers is 25 and their difference is 13. Find their product.

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

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.

Cole says the distance between points (-5,0) and (0,-5)is 5 units. is he correct? explain why or why not.