The item that I have chose is an action figure that is in the top 3 of the completed auctions for the action figure category and was sold for $7,200. Step 2: Your individual time period and interest rate after selling your collectible are on the next page. What is your time period and interest rate? My time period and interest rate after selling my collectible is 55 years and a 4.7% interest rate. Step 3: What would you like to use the money for in 45-55 years? I will utilize the funds to establish a business. This is the best use of the accrued funds, as I would have likely reached retirement age by this point. If the firm is successful, it helps produce a possible stable income on top of the retirement funds. Step 4: Let AA(tt) be the amount of money at the end of your time period if you sell your item after tt years. Find AA(tt) and simplify. 7200e^{.47\\\\sqrt{55}= 85434.29650=$85434.30 Step 5: What is the domain of AA(tt)? Remember, the domain is the relevant period for this