The janitor at a school discovered a leak in a pipe. it was leaking at a rate of 15 do oz per hour. how fast was the pipe leaking in gallons per day?

22.5 gallons per day

Step-by-step explanation:

First, find how many oz the pipe leaked in a day.

15*24=360.

Then divide by 16 to find how many gallons leaked per day.

360/16=22.5

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!