Using the historical risk premiums as your guide, what is your estimate of the expected annual HPR

Question:

Using the historical risk premiums as your guide, what is your estimate of the expected annual HPR on the S&P 500 stock if the current risk-free interest rate is 5%?
Portfolio
A portfolio is a grouping of financial assets such as stocks, bonds, commodities, currencies and cash equivalents, as well as their fund counterparts, including mutual, exchange-traded and closed funds. A portfolio can also consist of non-publicly...