Which is greater 3 gallons or 30 quarts

How do i do this activity, is appreciated

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?

Find the maximum value of p= 4x + 5y subject to the following constraints :