No explanation needed.

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

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?

Find the distance between the point (-3,-4), and (see the picture below)