S\&P Index b. Write an INDEX function in cell G4 that finds the closing value on this day using your answer to part a. What INDEX function should be used in cell G4 to find the closing value on this day used for the answer in part a? Using this INDEX function in cell G4, the closing value on the day in part a is (Type an integer or a decimal. Do not round.) Get more help - S\&P Index b. Write an INDEX function in cell G4 that finds the closing value on this day using your answer to part a. What INDEX function should be used in cell G4 to find the closing value on this day used for the answer in part a? Using this INDEX function in cell G4, the closing value on the day in part a is (Type an integer or a decimal. Do not round.) Get more help