Solve the equation.
1/3 (9x + 3) = 3x + 1
Solution:
Hurry before 3

it's infinitely many solutions :)

you got it right!

x = 0

Step-by-step explanation:

1/3 (9x + 3) = 3x + 1

9/3x + 3/3 = 3x + 1

3x + 1 = 3x + 1

3x - 3x = 1 - 1

0=0

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!