Use the data in Problem 8 to determine the change, from 2018 to 2022, in Ford’s 

Data from in problem 8

In early 2018, Ford Motor (F) had a book value of equity of \($34.9\) billion, 4.0 billion shares outstanding, and a market price of \($12.50\) per share. Ford also had cash of \($38.9\) billion, and total debt of \($154.3\) billion. Four years later, in early 2022, Ford had a book value of equity of \($48.5\) billion, 4.0 billion shares outstanding with a market price of \($21\) per share, cash of \($49.6\) billion, and total debt of \($138.1\) billion.

a. book debt-equity ratio.

b. market debt-equity ratio.