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 year 7% compounded annually 15 years $140,000 i 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.) b. $ of the $140,000 comes from deposits and $ comes from interest. (Use the answer from part (a) to find these answers. Round to the nearest dollar as needed.)