6. How many years will it take you to double your investment, compounding annually at a rate of 5%? a. 20.0 b. 14.4 c. 14.1 d. 142 7. Iris calculates that her college education will cost her $10,000 per year for four years and then result in a S15.000 Increase in her salary for the following forty years of her career. What is the Internal Rate of Return of her college a. 25.74% b. 5.00% c. 2.68% d" 6,000% 8. Iris calculates that her college education will cost her $10,000 per year for four years and then result in a $1 increase in her salary for the following forty years of her career. What is the Net Present Value of her college education, a. 176,293 b. 1,996 . 346,107 d. 560,000 9. Jermaine purchased WMT six months ago for $97.65 The monthly closing prices since then were 93.15, 95.83, 98.99, 97.53, 102.84, 99.88. What was her geometric average monthly return, in percent? -82.95% b. a. 4554 43% 0.44% d. . 0.38% 10, Lana's portfolio includes $75,000 in AT&T stock and $25,000 in Ford stock. Last year, AT&T returned 8%; Ford returned 12%. What was the portfolio's return in percent? a. 20% b. 12% c.8% d.9%