The price of a train ticket from orlando to kansas city is normally $155.00. however, children under the age of 16 receive a 75% discount. find the sale price for someone under the age of 16.
a) $116.25
b) $54.25
c) $271.25
d) $38.75

30 people weigh 160 pounds or more

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

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step-by-step explanation: