Darwal sells computer networks to educational institutions, and he earns an annual salary of $29,000 plus a 3% commission on all sales. What is the minimum amount of sales he needs to earn $50,000 annually, including both sales and salary?

Christian has been offered a new job that pays $24,000 a year plus 3% of sales. For what total sales would this new job pay more than his current job which pays $60,000?

Lilly, an art gallery manager, is paid a salary of $660.00 a week. Her normal work week is 33 hours, and she is paid time and a half for all overtime. Suppose she worked 44 hours this week. Calculate her earnings for a 44-hour work week.

Dan leased a Ford Truck for three years by paying $4000 up front and payments of $185 per month. The lease stipulated he would be charged $0.15 a mile for any mileage in excess of 36,000. When he returned the truck at the end of the lease, it had 39,221 miles on it. What was the total cost of the lease?