If f(x) is parallel to the line y= 3/4x+2/5

Hello there!

The question seems to be incomplete, but going off what I assume you meant: If f(x) is parallel to the line y= 3/4x+2/5, the slope of the line would be the same as the slope in y = 3/4x + 2/5, or 3/4.

This is because lines are parallel when they have the same slope. :)

I hope this helps and have a great day! If this wasn't the question let me know and I can help you more in the comments ! :)

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!