Mikheal, Hema, and 5 friends will help run the event. They will wear either a red shirt or a red baseball cap during the event. They want to spend exactly $40. Shirts cost $8 each and caps cost $4 each.

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!

x=0

step-by-step explanation:

- (2, -7)

- lines r and s and lines t and u must be parallel