Question A graph of the cost of gas purchased depending on the number of gallons pumped has the points (4,15) and (8,30) . What is the rate of change in the cost of the gas as each gallon is pumped?(1 point)

To find the rate of change in the cost of gas as each gallon is pumped, we can use the formula for the slope of a line:

slope = (change in y) / (change in x)

Given the points (4,15) and (8,30), the change in y is 30 - 15 = 15, and the change in x is 8 - 4 = 4.

Plugging these values into the formula, we get:

slope = 15/4

Therefore, the rate of change in the cost of gas as each gallon is pumped is 15/4.