Please show the excel formula to understand which items were used

The expected returns and standard deviations of stocks A and B are listed below, along with the correlation the returns of Stock A and Stock B. Calculate the expected return and standard deviation of a portfolio with the relative weights in the table below.
	Stock A E(R)	12.00%
	Stock B E(R)	18.00%
	Stock A	36.00%
	Stock B	60.00%
	Weight Stock A	45.00%
	Weight Stock B	55.00%
	A,B	-0.25
	Use the scratchpad to show your work in Excel.
	Type your numercial answers into the yellow cells below.
	Answers should be to two decimal places, e.g. 1.23% or $123.45.
	Portfolio Expected Return
	Portfolio Expected Standard Deviation