Treasury bills are currently yielding $2$ the expected market return is $8\%,$ the fed funds rate is $3\%,$ and the firm's beta is $0\mathrm{.}5.$ Calculate the cost of capital for this firm.

Answer should be in percentage and not decimal

For example if the answer is $10\mathrm{.}5\%,$ enter $10\mathrm{.}5$