Cynthia besch wants to buy a rug for a room that is 29 ft wide and 30 ft long. she wants to leave a uniform strip of floor around the rug. she can afford to buy 756 square feet of carpeting. what dimension should the rug have?

i believe the answer is c.

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jeff jeff

step-by-step explanation:

hello from mrbilldoesmath!

answer:   x (x+6)^2, choice b

discussion:

factor x out of the equation:

x^3 + 12x^2 + 36x = x (x^2 + 12x + 36).

note that 6+6 = 12 and 6*6 = 36 so the above factors into:

x (x+6)^2

which is choice b

you,

mrb