In early 2015 , Ford Motor (F) had a book value of equity of $24.9 billion, 3.9 billion shares outstanding, and a market price of $15.66 per share. Ford also had cash of $22.1 billion, and total debt of $121.1 billion. Three years later, in early 2018, Ford had a book value of equity of $35.6 billion, 10.6 billion shares outstanding with a market price of $10.03 per share, cash of $26.1 billion, and total debt of $157.1 billion. Over this period, what was the change in Ford's a. market capitalization? b. market-to-book ratio? c. enterprise value? a. Over the 3-year period, what was the change in Ford's market capitalization? The change in Ford's market capitalization was \$ billion. (Round to two decimal places.)