A bowling alley charges its customers an hourly rate to bowl plus shoe rental. The hourly rates are per lane.

A linear model of this situation contains the values (3, 50.25) and (4, 65.5), where x represents the number of hours bowled on one lane, and y represents the total cost for bowling.

What is the rate of change in this linear model?
$15.25 per hour
$4.50 per hour
$7.63 per hour
$45.75 per hour

Question

A bowling alley charges its customers an hourly rate to bowl plus shoe rental. The hourly rates are per lane.

A linear model of this situation contains the values (3, 50.25) and (4, 65.5), where x represents the number of hours bowled on one lane, and y represents the total cost for bowling.

What is the rate of change in this linear model?
$15.25 per hour
$4.50 per hour
$7.63 per hour
$45.75 per hour