Use the clues given below to figure out the mystery number. The mystery number is a three-digit number. Its digits are 2, 8, and
3.
• The 3 and the 8 are not next to each other.
The 2 comes before the 3.
What is the mystery number?
Answer here

step-by-step explanation:

i am not sure sorry : c

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

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