need help with these problems please

Economic conditions Probabilities Expected rates of return Strong 0.15 20% Normal 0.52 10% Weak 0.33 -5% Calculate the expected rate of return on the stock of a company described by the information in the table above. 0.06% O 6.55% O 0.10% O 9.85% As investors become more confident about future economic prospects, the SML: Rotates upward (counterclockwise) on its y intercept and becomes steeper Shifts downward but remains parallel to the old SML Shifts upward but remains parallel to the old SML Rotates downward (clockwise) on its y intercept and becomes flatter