18 Minutes, 50 Seconds Which of the following situations would best be modeled by a
discrete relationship?
O The weight of a dog over time.
O Birthday balloons cost $1 each.
The temperature inside a car over time.
O The cost of bananas is $0.55 per pound.

20

step-by-step explanation:

answer: do we write it

step-by-step explanation:

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!