Help me and pls zoom in if u can’t see it :)

105

Step-by-step explanation:

You can view this ratio as a fraction if it makes it easier for you

Put any larger value thats in a column over the smaller value and it will result in 15

75/5=15 etc...

Knowing this, we can take our top value and multiply by 15 to find the missing value

7(15)=105

whats the

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!