Javiers grandmother lives 120 miles away. it takes 1 hour to travle 40 miles by train. if javier leaves at 7a. m is it reasonable to say he will arrive in his grandmother's city by 9a. m

correct answer is c. just did it

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