Using the data from table 8.3, what is the portfolio expected return and the portfolio beta if you invest 35 percent in x, 45 percent in y, and 20 percent in the riskminus−free asset? a. 12.5%, 1.975 b. 15.0%, 1.975 c. 15.0%, 0.975 d. 12.5%, 0.975

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =