(09.07) Which of the following is not a factor involved in the
process of evaluating an observational study? (2 points)
A. Introduction
B. Results
C. Discussion
D. Bias

the workers who do no drive has no reasonable reason to buy gasoline due to they don't have anything to use it for

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!

i will with my problems and all the other things that need to   be on by the way

step-by-step explanation: