A manufacturing plant earned $80 per a man-hour of labor when it opened. Each year, the plant earns an additional 6% per man-hour.
Which expression gives the amount the plant earned per a man-hour of labor 3 years after it opened?
Choose 1
80+ (1+0.06)(1 +0.06)(1+0.06)
6 80(1 +0.06)(1 + 0.06)(1+0.06)
80+ 0.06 0.06 0.06
80 - 0.06 0.06 - 0.06

this is he//a hard

Step-by-step explanation:

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right

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!