Use the image and table to answer the question.
An illustration shows a graph depicting cost of gasoline per gallon in dollars in store A. The horizontal axis shows gallons ranging from 0 to 20 in increments of 5. The vertical axis shows the cost in dollars ranging from 0 to 70 in increments of 10. Four data points are plotted on the graph at left parenthesis 0 comma 0 right parenthesis, left parenthesis 5 comma 20 right parenthesis, left parenthesis 10 comma 40 right parenthesis, and left parenthesis 15 comma 60 right parenthesis. A line connects all the data points.
Store B
Cost of Gasoline per Gallon
Gallons ($) Cost
5 18.75
10 37.50
15 56.25
The proportional relationships between the cost and the number of gallons of gasoline for Store A and Store B are displayed in the graph and table. Which store has the better buy for a gallon of gasoline? Enter 1 for Store A. Enter 2 for Store B.
(1 point)
____has the better buy for a gallon of gasoline.
To determine which store has the better buy for a gallon of gasoline, we can compare the prices at each store for the same number of gallons.
For Store A, the cost of gasoline per gallon is as follows:
- 5 gallons: $20
- 10 gallons: $40
- 15 gallons: $60
For Store B, the cost of gasoline per gallon is as follows:
- 5 gallons: $18.75
- 10 gallons: $37.50
- 15 gallons: $56.25
By comparing the prices, we can see that Store B has lower prices for each quantity of gallons. Therefore, Store B, represented by option 2, has the better buy for a gallon of gasoline.