4. You want to expand your business by investing $25,500 now. How much do you have to pay if you decided to delay your business expansion 6 years and how much do you have to pay if you had made this expansion 3 years ago? The annual interest rate is i %. 5. You want to expand your business by getting a loan of $25,000 and you requested to pay it over the next 6 years with an annual interest rate of i %. How much is your installment (annual payment) per year? 6. You want to expand your business by getting a loan of $25,000 at an annual interest rate of i% and pay it back on installments of $5500 per year. After how many years you will make profit? 7. You want to expand your business by getting a loan of $40,000 and you requested to pay it back on installments of S6000 per year over the next 10 years. What is the annual interest rate of your loan? 8. You want to run a business that gives you revenue of $5,500 per year and increases gradually with a rate of $500 starting from year 2. What is the present worth if you plan to run this business for 8 years at an annual interest rate of 1%? Also, what is equivalent (constant) annual revenue that you can get from this business? 9. Estimate the present worth in year 0 for the cash flows (CF) shown in the table below. The interest rate is 1% per year. 1 (+/-1 (+1)