Hadley has

3

6

3

6

of a box of white envelopes and

1

3

1

3

of a box of gray envelopes. When full, each box of envelopes has the same number of envelopes.

Hadley said she has

4

9

4

9

of a box when she puts the white envelopes and gray envelopes together.

Which statements describe this situation? Select the two statements that apply.

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!

15: 24

62.5%

step-by-step explanation: