500-liter tank full of oil is being drained at the constant rate of 20 liters per minute. Use function notation to write a linear function expressing the number of liters in the tank V after t minutes.

The function notation for expressing the number of liters in the tank V after t minutes will be .

Given,

The capacity of oil-tank is 500 litres.

The oil is drained at the constant rate of 20 liters per minute.

We have to express the number of liters in the tank V after t minutes.

Since the total capacity of tank is 500 litres, so we subtract number of litres drained from 500 litres.

Using function notation, after t minutes the volume remaining in the tank will be,

.

Thus the correct expression is .

For more details on function notation follow the link:

link

V=500-20t

Step-by-step explanation:

The slope is -20 so V= -20t they start with 500 so V=500-20t

step-by-step explanation:

b.   e = 7.5h

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