Question 20 Mirella bought some cat food for 2.00 per pound and some dog food for $2.50 per pound She spent a total of $20.00 Which graph represents al the possible combinations of cat food, c. and dog food, d. Mirella could have bought?

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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

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step-by-step explanation: