Luke divided 16.80 by 2.5 as shown, but he forgot to put the decimal point in the answer.
Complete the sentence below.

it equal 6.72

Step-by-step explanation:

if u divide them it will equal 6.7 but his answer would of looked like 672

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!

its c