Use the image to answer the question.

Question

Store A - ($) Cost of Gasoline per Gallon
(15, 60), (10, 40), (5, 20), (0, 0)
Store B - ($) Cost of Gasoline per Gallon
(8, 28), (4, 14), (0, 0)
The proportional relationship between the cost of gasoline and the number of gallons of gasoline from Store A and Store B are displayed in the graphs. Use the graphs to interpret the store that has the cheaper cost of gasoline per gallon.
A. Store A has the cheaper gasoline. The cost of gasoline is $0.25 per gallon.
B. Store B has the cheaper gasoline. The cost of gasoline is $3.50 per gallon.
C. Store B has the cheaper gasoline. The cost of gasoline at Store A is $5 per gallon.
D. Store B has the cheaper gasoline. The cost of gasoline at Store A is $100 per gallon.

Answer 1

To determine which store has the cheaper cost of gasoline per gallon, we can analyze the data points for both Store A and Store B.

Store A:

• (0 gallons, $0)
• (5 gallons, $20) => Cost per gallon = $20/5 = $4.00
• (10 gallons, $40) => Cost per gallon = $40/10 = $4.00
• (15 gallons, $60) => Cost per gallon = $60/15 = $4.00

The cost of gasoline at Store A is consistently $4.00 per gallon.

Store B:

• (0 gallons, $0)
• (4 gallons, $14) => Cost per gallon = $14/4 = $3.50
• (8 gallons, $28) => Cost per gallon = $28/8 = $3.50

The cost of gasoline at Store B is consistently $3.50 per gallon.

Conclusion

Comparing the costs:

• Store A: $4.00 per gallon
• Store B: $3.50 per gallon

Thus, Store B has the cheaper cost of gasoline.

The correct answer is: C. Store B has the cheaper gasoline. The cost of gasoline at Store A is $4 per gallon.

(Note: The option provided states "$5 per gallon" for Store A, but the calculated price is $4 per gallon. Please ensure the options match the calculations.)