There are four marbels in a bag with the colors red white blue and green john pulls out one marbel and rosses a coin how many elements are there in the sanple space 2,4,8 or 16 plz

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?