What expression is equivalent to (13x - 4) - ( 20x - 15)

The height of a triangle is 4 in. greater than twice its base. the area of the triangle is no more than 168 in.^2. which inequalitycan be used to find the possible lengths, x, of the base of the triangle?

Select the quadratic that has root x = 8 and x = -5

Negative 5 1/12 + negative 4 1/4 + 6 3/4