You invest $10,000 in a complete portfolio. The complete portfolio is composed of a risky asset with an expected rate of return of 12% and a standard deviation of 18% and a Treasury bill with a rate of return of 3%. How much money should be invested in the risky asset to form a portfolio with an expected return of 9%?

		$3,000
		$7,200
		$6,667
		$4,780