Determine the function decrive and then use it to answer the question. A large mixing tank currently contain 55 gallons of liquid oxygen, into which 0.75 gallons of a bonding compound have been mixed. A tap will open, pouring 4 gallons of liquid Oxygen per minute into the tank at the same time the compund is poured into the tank at a rate of 15 gallons per hour. The concentration (onces per gallon) of the bounding compound in the tank after t minutes. C= 0.75 + 0.15t / 55+ 4t. Express t as a function of C. Determine the time it take to have a concentrate of 127.5 gallons of bolding agent to 885 gallons.

a) t= 55C - 0.75 / 0.15 - 4C

b) t= 0.75 - 55 C / 4C - 0.15

c) t= 0.15 - 4C / 55 C - 0.75

b) t