In early

20152015,

Ford Motor (F) had a book value of equity of

$ 24.4$24.4

billion,

3.93.9

billion shares outstanding, and a market price of

$ 15.66$15.66

per share. Ford also had cash of

$ 21.5$21.5

billion, and total debt of

$ 117.6$117.6

billion. Three years later, in early

20182018,

Ford had a book value of equity of

$ 34.9$34.9

billion,

10.310.3

billion shares outstanding with a market price of

$ 11.77$11.77

per share, cash of

$ 26.1$26.1

billion, and total debt of

$ 154.7$154.7

billion. Over this period, what was the change in Ford's

a. Over the 3-year period, what was the change in Ford's market capitalization?

b. Over the 3-year period, what was the change in market-to-book ratio?

c. Over the 3-year period, what was the change in enterprise value?