Ineed the answer asap a roofing contractor purchases a shingle delivery truck with a shingle elevator for $34,650. the vehicle requires an average expenditure of $7.50 per hour for fuel and maintenance, and the operator is paid $13.50 per hour.
(a) write a linear equation giving the total cost c of operating this equipment for t hours. (include the purchase cost of the equipment.) c(t) =
(b) assuming that customers are charged $42 per hour of machine use, write an equation for the revenue r derived from t hours of use. r(t) =
(c) use the formula for profit p = r − c to write an equation for the profit derived from t hours of use. p(t) =