The Rock has an 88-gallon fish tank. When it needs to be cleaned, it can be drained at a rate of 6 gallons per minute. Show all work. Complete sentence for each question.

first part: Assuming the tank was full, write a function in the form y=mx + b that represents the amount of water in the tank, Y, after X minutes. You will need to know the initial value and the rate of change.

second part: How long has the tank been draining for if it has 34 gallons left?


  1. Answer:9 minutes
    Step-by-step explanation:
    1. to find how much was drained subtract how much is left from the total amount when full  88-34= 54
    2. divide answer by the rate per minute  54/6
    3. you have answer 9 minutes


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