5 Sara bought 1 kilogram 600 grams of red apples and green apples. The mass of the red apples was 500 grams. What is the
mass of green apples she bought? Give your answer in grams

i dont know i just need points

good luck on your studies! : )

david edward.

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!