To find the cost per game for both Terry and Tommy, we will divide the total amount they paid by the number of games they bowled.
For Terry:
- Total cost = $22.50
- Number of games = 3
Cost per game for Terry: \[ \text{Cost per game (Terry)} = \frac{\text{Total cost}}{\text{Number of games}} = \frac{22.50}{3} = 7.50 \]
For Tommy:
- Total cost = $15
- Number of games = 2
Cost per game for Tommy: \[ \text{Cost per game (Tommy)} = \frac{\text{Total cost}}{\text{Number of games}} = \frac{15}{2} = 7.50 \]
Both Terry and Tommy paid $7.50 per game.
So, the rate of change (cost per game) is $7.50 per game.