Answer:

Explanation:
Let number of gallons in tank be 'g'
We know that maximum possible number of Miles per tank of fuel are 363. This is called the fuel range of the car when gas tank is full
For every gallon which is being utilized there is a decrease in range by 16.5 Miles
Hence the highest possible gallons of tank will be when the car gives full range.
Hence range is function of gallons and equation can be written as follows:

Solving for g


Which means that maximum possible fuel in SUV can be 22 Gallons