Valerie buys a new car. She can drive 288 miles on a full tank of gas. If her car holds 16 gallons of gasoline, what is the unit rate of miles per gallon?

To find the unit rate of miles per gallon, divide the total number of miles by the total number of gallons: $288 \text{ miles} \div 16 \text{ gallons} = \boxed{18}$ miles per gallon.

To find the unit rate of miles per gallon, we will divide the total number of miles by the total number of gallons.

Step 1: Divide the total number of miles by the total number of gallons.
288 miles / 16 gallons = 18 miles/gallon

Therefore, the unit rate of miles per gallon is 18 miles per gallon.

To find the unit rate of miles per gallon, we need to divide the total number of miles Valerie can drive by the number of gallons her car holds.

First, we divide the total number of miles by the number of gallons to find the rate for one gallon:
288 miles รท 16 gallons = 18 miles/gallon

Therefore, the unit rate of miles per gallon for Valerie's car is 18 miles/gallon.