The product of 2 consecutive integers in the square of the lesser minus 9

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.