Mark just got his commercial driver's license and is starting a new career as a truck driver.
getting trained and licensed involved a one-time cost of $422. gas and insurance end up
costing him $3 per mile. for his first delivery, mark will get paid $400 plus $5 per mile that
he drives. if he drives a certain distance on this delivery, mark will break even, making back
all the money he had to spend. how much would both the costs and the earnings be? what
distance would he have to drive?