A lawn is in the shape of a trapezoid with a height of 50 feet and bases of 40 feet and 160 feet. How many full bags of fertilizer must be purchased to cover the lawn if each full bag covers 5000 square feet and only full bags of fertilizer can be bought? ​

Step-by-step explanation:

Area = 50 × (40+160)/2 =5000 ft^2

You need one bag.

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