Latoya borrowed $8000 at a rate of 9%, compounded quarterly. Assuming she makes no payments, how much will she owe after 5 years? Do not round any intermediate computations, and round your answer to the nearest cent.
( I will be marking to!)

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?

Find the solution on the interval [0, 2pi)