Plzz help me with this question

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,

Over the course of a month, a person's weight decreases. what type of relationship is this? a. positive relationship

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?