The bisons at the city zoo are fed 3 8 of a barrel of grass each day. the elephants are fed 7 3 as much grass as the bisons. how many barrels of grass are fed to the elephants in 4 7 of a week? write in simplest form.

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

he has 140 chickens because he has 10 times more chickens than ducks and he has 14 ducks so 14*10=140