Set up a proportion and solve. a car average 12 gallons of gasoline for each 420 miles driven. how much gasoline will it need for a 3,360 mile trip?

at home andrea has 1 2/3 kilograms of rice

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