Sandra Wilson tills her garden once each year. She rents a garden tiller for one
day at $57 per day to do the job. She pays 5% tax on the rental price and uses 4.
gallons of gas at $1.65 per gallon.
19. What is her total cost for using the tiller?
20. If a similar tiller costs $346.99 including tax, for how many days, to the nearest
whole day, could Sandra rent it before renting would cost more than buying?