A firms current balance sheet is as follows:

Assets	$	150		Debt	$	15
				Equity	$	135

a) What is the firms weighted-average cost of capital at various combinations of debt and equity, given the following information? Round your answers to one decimal place.

Debt/Assets		After-Tax Cost of Debt		Cost of Equity		Cost of Capital
0	%	8	%	15	%	______%
10		8		15		______%
20		9		15		______%
30		9		15		______%
40		11		16		______%
50		13		16		______%
60		15		18		______ %

b) Construct a pro forma balance sheet that indicates the firms optimal capital structure. Choose the best structure from the options analyzed in part a. Compare this balance sheet with the firms current balance sheet. Round your answers to the nearest dollar.

Assets	$	150		Debt		$_____
				Equity		$_____

What course of action should the firm take? Round your answer to the nearest whole number.

Since the firm is currently using _____% debt financing, it _____ (is/is not) at its optimal capital structure and _______(should not change the capital structure/should substitute some debt for equity/should substitute some equity for debt)

c) As a firm initially substitutes debt for equity financing, what happens to the cost of capital?

The cost of capital initially ______(decreases/increases/does not change)

d) If a firm uses too much debt financing, why does the cost of capital rise?

If a firm uses too much debt financing, the firm becomes (more/less) financially leveraged and riskier. This causes the interest rate to _____(rise/fall) and the cost of equity to _____(increase/decrease) These changes in the cost of debt and equity cause the cost of capital to ______(increase/decrease)