How many city miles can I travel per week on 5 gallons of gasoline?

Make/City MPG/City mi on 5 gal of gas/ HGHWY MPG/Gals need to drive 304 HGHWY mi /Fuel cap (in gallons)

Chevy Aveo 26,? 35,? 12.0

Ford Focus 26,? 34,? 14.0

Honda Civic 30,? 38,? 13.3

Hyundai Accent 32,? 35,? 11.9

Toyota Corolla 32, 41,? 13.2

Is it a hot day and Air Conditioning is used?

Yeah.. so how would I figure these ? Out?