Final answer:
The change in price of the plane ticket is $19.13.
Step-by-step explanation:
To determine the change in price of the plane ticket, we subtract the initial price from the final price. In this case, the initial price is $323.85 and the final price is $342.98.
Change in price = Final price - Initial price
Change in price = $342.98 - $323.85
Change in price = $19.13