3) a tank currently holds 35 liters of water, and water is pouring into
the tank at 15 liters per minute. how much water much water is in the
tank after 5.5 minutes?

117.5 Liters

Step-by-step explanation:

Already holds: 35L

Input: 15L / min

15L * 5.5 min = 82.5L

82.5 + 35 = 117.5L

117.5 liters of water is in the tank after 5.5 minutes

Hope this helps :)

828. all there is to it!

here, if you ever need with rounding (or other forms of arithmetic/math) again, use this:

thats the rounding one, but if you just click the top left, it shows you all the calculators you may need!

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!