Question

A gallon of gas costs $2.50. Use the equation p=2.5g to find a total cost with price, p, and gallons, g. Match each number of gallons on the left with its equivalent dollar amount on the right.

Answer 1

Explanation:

10 gal × $2.50/gal = $25

8 gal × $2.50/gal = $20

16 gal × $2.50/gal = $40

Answer 2

Replace g with the number of gallons and solve:

P = 2.5G

10 gallons = 2.5 x 10 = 25.00

8 gallons = 2.5 x 8 = 20.00

16 gallons = 2.5 x 16 = 40.00