Suppose you're painting a 10 ft by 10 ft wall and you find that you need 1 can of paint. How many cans of paint will you need to buy so you can paint a 12 ft by 12 ft wall?

2

Step-by-step explanation:

because 12 times 12 is 144 so you'll need 2 cans

square root

step-by-step explanation:

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