Answer:
11.11 gallons
Step-by-step explanation:
In each gallon fuel Haley's car gets at least = 18 miles
She plans a trip that is 200 miles.
She will need fuel for 200 miles = [tex]\frac{200}{18}[/tex]
= 11.11 gallons
Haley will need minimum number of 11.11 gallons for her trip.