Shane buys 3 books. each book is the same price. he also must pay $0.35 tax on each book. write and expression to show the total cost of the books. if the price of each book is $5.15, how much does shane spend in all?

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years

If x+y+z=0 what is the value of [tex] {x}^{3} + {y}^{3} + {z}^{3} [/tex]