If R varies directly as S and inversely as T if R = 8 when S =4 and T=3 then R is equal to

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

Arestaurant needs to buy thirty-seven new plates. if each box has five plates in it, how many boxes will they need to buy?

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?