Please help me answer the highlighted cells in green. Provide formulas in excel format please. Thanks

Price Series for Stock A, a, and C 8 Stock Price C Stock Price A Stock Return Date 31/12/2007 31/12/2008 31/12/2009 31/12/2010 31/12/2011 31/12/2012 31/12/2013 31/12/2014 31/12/2015 31/12/2016 31/12/2017 31/12/2018 31/12/2019 Stock Statistics Return Variance Standard Deviation Correlation Covariance 50-50 Portafolio Weights Portafolio Variance Expected Return Minimize Variance Weights Portafolio Variance Expected Return A stock Price 1.10 4.19 2.37 2.23 2.10 B Stock Return C Stock Return 35.63 47.04 51.58 51.49 57.90 36.26 52.36 77.61 79.14 131.14 230.49 100% 4.53 4.57 4.75 5.35 4.93 5.26 5.43