The sum of three numbers is 81. The second number is 6 less than the first. The third number is 3 times the second. What are the numbers?

x> 6

step-by-step explanation:

8x+8> 7x+14

8x-7x> 14-8

x> 6

can you rephrase the question ? it is unclear : -)

step-by-step explanation:

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!