Maria Sawatsky has $3000 to invest in a financial institution. She decides to purchase a step bond that guarantees her 334 percent for the first year, 412 percent for the second year, and 514 percent for the third year. She will take out any interest that she earns at the end of each year so the interest is only calculated on the initial $3000 investment. a. Calculate the total interest she will earn in three years.Calculate the average interest she will earn per year