1. How many ounces of food were in the bag 12 days after Andre bought it?
Andre bought a new bag of cat food. The
next day, he opened it to feed his cat.
The graph shows how many ounces
were left in the bag on the days after it
was bought.
2.
How many days did it take for the bag to contain 16
ounces of food?
64
56
48
40
3.
How much did the bag weigh before it was opened?
ounces of cat food
32
24
16
8
4.
About how many days did it take for the bag to be
empty?
4 8 12 16 20 24 28 32 36 40 44
days since bag was bought

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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!