The graph shows the cost of gasoline at a gas station. find the cost in dollars per gallon

7/2 or 3.5

Step-by-step explanation:

The y-axis represents the cost is dollars. The x-axis is the amount of gasoline in gallons. To find the cost in dollars per gallon, choose a point on the graph, and divide the dollars (y-coordinate) by the gallons (x-coordinate).

cost = (21/4) / (3/2)

cost = 21/4 * 2/3

cost = 42/12

cost = 7/2 = 3.5

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100