Svetlana's hair is 4 centimeters long. her hair grows 1.5 centimeters per month. svetlana wants her hair to grow so that it is at least 7 centimeters long.
write an inequality to determine the number of months, m, it will take svetlana's hair to grow so it is at least 7 centimeters long.

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?