A four-person committee is needed to study the ways of improvong piblic transportation. How many committees could be formed from ten people on the
board of supervisiors?

i don't have the answer rn but go to math papa. it shows the steps and the answer. hope this : )

step-by-step explanation:

practice. practice. practice.

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!