A large mixing tank currently contains 120 gallons of water into which 9 pounds of sugar have been
mixed. A tap will open pouring 20 gallons per minute of water into the tank at the same time sugar
is poured into the tank at a rate of 1 pound per minute. Find the concentration (pounds per gallon)
of sugar in the tank after 15 minutes. Is that a greater concentration than at the beginning?
Write a function that models this:
C(t) =
What will the concentration be in 15 minutes?
C(15) =
The concentration is greater at the ending.
The concentration is greater at the beginning.
The concentration is the same at the beginning and the ending