A) A bookshop made profit equal to the selling price of 75 lextbooks when it sold 100 textbooks Calculate the percentage markup that the bookshop realizes from this transaction​

$15 each

step-by-step explanation:

$45/3 children= $15 each

i believe it's a.

i'm not sure on this one, most likely correct.

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