3. Cora is raising money for a local homeless shelter. She manages to have
raised $624. This was 4 times as much money as Justin raised. How much
money did Justin raise?
(A) $ 2,496
(B) $ 124
(C) $ 628
(D) $ 156

Step-by-step explanation:

okay you are going to divide 624 by 4 witch is 156

50.6

step-by-step explanation:

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!