Stephanie is a waitress and she is paid $2.60 per hour plus 15% of the total cost of food and beverages she serves. If during a 5-hour shift she earns $200, what was the total cost of the food and beverages she served?​

For what value of (y) is 3^3/3^y =1/9

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?

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! )