How do you do the math for this?
if you drive 50 miles each week and your car gets 25 miles to the gallon with gas costing $4.00 per gallon, how much gas will you have to buy?

For the answer to the question above asking, how much gas will you have to buy if you drive 50 miles each week and your car gets 25 miles to the gallon with gas costing $4.00 per gallon?
The car will use 2 gallons of gas per week at $4 per gallon so you will have to buy $8 per week.
i hope my answer helped you.