Please help I will mark brainleist

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! )

6cm10 cma conical paper cup has dimensions as shown in the diagram. how much water can the cup hold when full?

Mia’s gross pay is 2953 her deductions total 724.15 what percent if her gross pay is take-home pay