Laura is a salesperson in a retail store and earns $66 per week plus 11% of her weekly sales. If Laura earned $209 one week, what were her sales that week?

A user receives a joke that he decides to forward to everyone in his address book. Each of the 50 people in his address book also forward the joke. If 20% of these 50 people have 30 people in their own address books and the other 80% of the 50 have 40 people in their address books, how many computers will be infected with the virus? Assume that none of the 50 people know each other.

A guitar cost $3.75 one year if prices increased by 3% each after this catalog was printed, how much

would the guitar cost the next year

would the guitar cost the next year

3.75 x 1.03 (you want to find 103% of the original price) = 3.8625 => $3.86

Amy paid $75.83 for a pair of running shoes during a 15% off sale. What was the regular price

Basic life insurance $53000 is reduces by 2 percent each year until it reach 25%

Maria took a group of clients out to dinner and the total of the bill was $227.68 including tax if maria left a 15% tip of the total bill how much will the dinner cost in all??