I don't understand how to find the interest earned. I also don't know which curve represents the supply of saving, please explain.

2. The supply of saving e that Yvette receives a pay raise of $1,050 pe epositing it in a bank. and services, or she can save it by For each of the alternative annual interest rates in the following table, indicate how much interest Yvette would earn per year on her annual raise if she saves it. (Note: Assume that no income taxes are deducted.) Interest Rate Interest Earned (Dollars) (Percent) (Dollars) A higher interest rate gives Yve incentive to save. The following graph shows variety of possible curves representing the supply of saving. INTEREST RATE (Percent) 20 40 60 100 SAVING (Billions of dollars)