Samuel has 46 marbles he gave some marbles to a friend and has nine marbles left how many marbles did samuel give to his friend

Mustafa contributes 11% of his $67,200 annual salary to his 401k plan. what is his pretax income

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

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )