Claire goes out to lunch. The bill, before tax and tip, was $9.85. A sales tax of 7.5% was added on. Claire tipped 18% on the amount after the sales tax was added. The total cost of the meal plus tip and tax was more than the cost of the bill by what percent? Round to the nearest whole number.

Acollege is selling tickets for a winter fund-raiser. one day, krissa sold 14 adult tickets and 8 student tickets for a total of $376. the next day, she sold 7 adult tickets and 11 student tickets for a total of $272. krissa wanted to find the price of one adult ticket, a, and the price of one student ticket, s. she wrote and solved the following system of equations.