Acompany rents diving equipment for a fixed amount plus a fee based on the number of days for which the equipment is rented. the table below shows the total charges, y, in dollars, of renting diving equipment for x number of days: number of days(x) | total charges (dollars)(y) 0 | 5 1 | 20 2 | 35 what is the fixed amount charged? $2 $5 $15 $20