Answer:

Explanation:
We have been given that Nikki can drive her car 22 miles on each gallon of gasoline. We are asked to write the expression that represents the number of gallons used when Nikki drives 'm' miles.
To find the number of gallons used we will divide the total distance traveled by distance traveled in one gallon.
Since Nikki traveled 'm' miles and car travels 22 miles on each gallon of gasoline, so the expression
represents the number of gallons used.