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Answer:
80 gallons
Step-by-step explanation:
looking at t=0 the graph is at 80, unless there is more info I would say that the inital value was 80 gallons.
Answer: It is 80
Step-by-step explanation: The initial value, or y-intercept, is the output value when the input of a linear function is zero. It is the y-value of the point at which the line crosses the y-axis.