Abody in the solar system has a period of 10,759.22 days and a perihelion speed of 10.18 km/s. a. calculate the aphelion radius in nautical miles (14 points). b. calculate the eccentricity (2 points). c. extra credit: name the object. (6 points).

Consider a treasury bill with a rate of return of 5% and the following risky securities: security a: e(r) = .15; variance = .0400 security b: e(r) = .10; variance = .0225 security c: e(r) = .12; variance = .1000 security d: e(r) = .13; variance = .0625 the investor must develop a complete portfolio by combining the risk-free asset with one of the securities mentioned above. the security the investor should choose as part of her complete portfolio to achieve the best cal would be a. security a b. security b c. security c d. security d