8 times the sum of x and 6

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

Hey hotel charges guests $19.75 a day to rent five video games at this rate which expression can be used to determine the charge for renting nine video games for one day at this hotel? pls