$9.$ One year ago, JK Mfg$.$ deposited $$12,000$ in an investment account for the purpose of buying new equipment four years from today. Today, it is adding another $$15,000$ to this account. The company plans on making a final deposit of $$10,000$ to the account one year from today. How much cash will be available when the company is ready to buy the equipment assuming an interest rate of $5\mathrm{.}5$ percent? answering the following using excel formulas