Arturo is building a flower bed in the shape of a right triangle. The hypotenuse of the right triangle is 13 feet. One of the legs needs to be 7 feet longer than the other leg.



Which equation can be used to find x, the length of the shorter leg?



x(x + 7) = 13

x(x + 7) = 169

x2 + (x + 7)2 = 13

x2 + (x + 7)2 = 169