11. [I1 Points] TANAPCALC10 5.3.002. PRACTICE ANOTHER Find the accumulated amount A, if the principal P is invested at an interest rate of r per year for it years. (Round your answer to the nearest cent.) P = $15,000, r = 7%, t = 10, compounded quarterly A = $:] Need Help? 12. [-/1 Points] TANAPCALC10 5.3.014. PRACTICE ANOTHER Present Value of an Investment Diego deposited a certain sum of money in a bank 2 years ago. If the bank had been paying interest at the rate of 6% compounded continuously and he has $11,000 on deposit today, what was his initial deposit? (Round your answer to the nearest cent.) $ :] Need Help? 13. [-/1 Points] TANAPCALC10 5.3.021. PRACTICE ANOTHER Find the interest rate needed for an investment of $10,000 to triple in 13 years if interest is compounded daily. (Round your answer to the nearest hundredth of a percentage point.) :1 % Need Help? 14. {-11 Points] TANAPCALC10 5.3.025. PRACTICE ANOTHER How long will it take for an investment of $3,000 to triple if the investment earns interest at the rate of 5%/year compounded daily? (Round your answer to one decimal place.) :l Yr Need Help? 15. [0/1 Points] PREVIOUS ANSWERS TANAPCALC10 5.3.058. Investment Analysis The effective rate of interest can be calculated using the formula re=(1+%)m1 PRACTICE ANOTH ER where reff is the effective rate of interest, r is the nominal interest rate per year, and m is the number of conversion periods per year. Find the nominal interest late that, when compounded monthly, yields an effective interest rate of Fla/year. (Round your answer to two decimal places.) x % Neeanenp? -..--.- _._.- .-. ..- . __ I . ... .-..__. Average Life Span One reason for the increase in human life span over the years has been the advances in medical technology. The average life span for American women from 1907 through 2007 is given by W(t) = 49.9 + 17.1 |n(t) (1 s t s 6) where W(t) is measured in years and t' is measured in ZO-year intervals, with t = 1 corresponding to 1907.T (Round your answers to one decimal place.) (a) What was the average life expectancy for women in 1907? :lvr (b) If the trend continues, what will be the average life expectancy for women in 2067 (t = 9)? SW