You will use bisection search to determine the lowest rate of return, r, that is needed to achieve a down payment on a $750K house in 36 months. Since hitting this exact amount is a bit of a challenge, we only require that your savings be within $100 of the required down payment. For example, if the down payment is $1000, the total amount saved should be between $900 and $1100 (exclusive). Your bisection search should update the value of r until it represents the lowest rate of return that allows you to save enough for the down payment in 3 years. r should be a float (e. g. 0.0704 for 7.04%). Assume that r lies somewhere between 0% and 100% (inclusive).