The present value of a 10-year annuity-immediate with level annual payments and interest rate i is X. The present value of a 20-year annuity immediate with the same payments and interest rate is 1.5X. Find i. a. 7.2%. b. 7.0% c. 6.8% d. 6.6% e. 6.4%

Amanager of a store that sells and installs spas wants to prepare a forecast for january and june of next year. her forecasts are a combination of trend and seasonality. she uses the following equation to estimate the trend component of monthly demand: ft = 30+5t, where t = 1 in january of this year. seasonal relatives are 0.60 for january and 1.50 for june. what demands should she predict for january and june of next year