Question 18 (Mandatory) (3.2 points) Investors sell stock at the: bid price. dealer price. quoted ask price. broker price. Question 19 (Mandatory) (3.2 points) Which of these are valued as a special zero-growth case of the constant growth rate model? Preferred stock Common stock Future dividends Future stock prices Question 20 (Mandatory) (3.2 points) Stock valuation model dynamics make clear that higher growth rates lead to: 0 higher valuations. 0 lower valuations. 0 lower growth rates continuing. 0 higher growth rates continuing