Suppose $6000 is invested in a savings account for 13 years (156 months), with an annual interest rate of r, compounded monthly. The amount of money in the 156 account after 13 years is Atr)- 6000 1+ 12 a Use the Intermediate Value Theorem to show there is a value of rin 0,008-an terest rate between 0% and 8% -hat alws you to reach your sangs goal of $7000 in 13 years. b. Use a graph to ilustrate your explanation in part (a); then approximate the interest rate required to reach your goal Qi -7000 7000 Approximate the interest rate needed to reach $7000 over 13 years *x (Type an integer or a decimal rounded to the rearest tenthas eaded)