Question 6(Multiple Choice Worth 1 points) Solve for x. Round your answer to 2 decimal places.
X
3.71
13.21
5.94
8.25

if x decreases by 4 then y increases by 10

step-by-step explanation:

step-by-step explanation: yes

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!

need more detail

step-by-step explanation:

lele