A 12-ft ladder is leaning on a building. If the base of the ladder is placed 5 feet from the building, approximately how high does the ladder reach? A. 13 ft
B. 7 ft
C. 11 ft
D. 14 ft

(8+64)^2= 5184 < answer

step-by-step explanation:

2^3 = 8

4^3= 64

(8+64)^2 = 5184

mrbilldoesmath!

answer: a parabola

steps:

(x-1)(x+4)   = x(x+4) - 1(x+4) = (x^2 + 4x) - (x+4)

                = x^2 +4x -x -4   = x^2 +3x -4

which is a parabola

mrb