Ebay Inc. $($EBAY$)$ has the following capital structure based on market value.

Long$-$term debt $$900$ million

Preferred stock $5$ million shares at $$5$ per share

Common stock $30$ million shares at $$5$ per share

Costs of debt and equity are as follow:

Before$-$tax cost of debt $4\%$

Cost of preferred stock $7\%$

Cost of equity $3\%$

Tax rate $30\%$

What is the cost of capital for Ebay?

Cost of capital $=,\%$