1. What is the approximate future value of an annuity after 10 years with payments each period of $200, and an interest rate of 647 a $1.257.59 b. $2,515.58 C. $2,636.16 d. $3,187.48 2. Set the sliders so that the interest rate is 5%, the payment is $100, and the number of periods is 3. If the interest rate doubles from 5 to 10%, the future value of the annuity: 3. Increases but by less than double b. Exactly doubles c. Increases by more than double d. cannot be determined Select 3. Again, set the sliders so that the interest rate is 5%, the payment is $100, and the number of periods is 3. Ir the payment doubles from $100 to $200, the future value of the annuity a. Increases but by less than double b. Exactly doubles C. Increases by more than double d. cannot be determined You read in The Wall Street Journal that 30-day T-bills are currently yielding 5.1%. Your brother-in-law, a broker at safe and Sound Securities, has given you the following estimates of current interest rate premiums: Inflation premium 3.5 Liquidity premium - 0.8% . Maturity risk premium = 24 Default risk premium - 2.45% On the basis of these data, what is the real risk-free rate of return? Round your answer to two decimal places