do we assume y is squared because the detention pond is a square and that the length is the same as the height. That way the volume of a triangular prism satisfies the equation 1/2*bh*L ?

1^3 + 2^3 + 3^3 +4^3 = (1+2+3+4)^2

step-by-step explanation:

i am only able to answer the first part. i am not sure about the second part. sorry

13664

step-by-step explanation:

=cross multiply

=100 x = 13664

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