Need help w geometry

Ineed on 32 and 34! show work! correct gets brainliest! 50 points

The table above shows approximate conversions from gallons to liters. what is the value of x?

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?