HELP PLEASE HELP ILL GIVE POINTS AND 5 STARS

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

Hi, can anyone show me how to do this problem? 100 points for this. in advance

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.