For a recent 2-year period, the balance sheet of Pronghorn Company showed the following stockholders equity data at December 31 (in millions).

2017

2016

Additional paid-in capital$ 890$ 820Common stock540530Retained earnings7,2305,260Treasury stock1,677775 Total stockholders equity$6,983$5,835 Common stock shares issued216212Common stock shares authorized500500Treasury stock shares3925 (a) Answer the following questions. (1) What is the par value of the common stock?

(2) What is the cost per share of treasury stock at December 31, 2017, and at December 31, 2016?

(b) Prepare the stockholders equity section at December 31, 2017.