If f(x) = x - 5 then match each of the following.
1. f(-1)
2. f(0)
3. f(1)
4. f(2)
5. f(5)
6. f(8)
a. -3
b. -5
c. 0
d. -4
e. -6
f. 3

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!