Which of these shapes is congruent to the given shape? A.

B.

C.

D.

E.

Solve the system of equations. y= 2x y= x^2 - 15

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount