8.5.13 a. Use the appropriate formula to determine the periodic deposit. b. How much of the financial goal comes from deposits and how much comes from interest? Periodic Deposit Rate Time Financial Goal $? at the end of each month 3.5% compounded monthly 10 years $210,000 Click the icon to view some finance formulas. a. The periodic deposit is $ (Do not round until the final answer. Then round up to the nearest dollar as needed.)Solve for P in the formula below. What does the resulting formula describe? P[(1+ r)t -1] r A