1 .Alex is building a house. The materials cost 1/1/2 times the cost of the land.
The wages cost 1/1/4 times the cost of the land.
(a) Show that the ratio of costs, in its simplest form, is land : materials : wages = 4: 6:5.​

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?