one number is 7 times a first number. A third number is 100 more than the first number. If the sum of the three numbers is 901, find the numbers. please help!

a and b are equal

step-by-step explanation:

the correct answer is 1: 2

step-by-step explanation:

hope this your welcome : )

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!