The cost of a gallon of milk is $.50 more than five times the cost of a gallon of water. If a gallon of milk costs $3.75, what is the cost of a gallon of water?

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?