Gas Fuel

Is Gas Fuel Expense Deductible for a Business AND is prepaid cell phone deductible?

2 questions:
For a gardener with a gardening route, the gas for the work truck is deductible right? (no reimbursements and the truck is used 100% business only). Does it go on Schedule C, Line 27 Other Expenses.. “fuel”.?? Example: Use $500 [...]