let  represents 1 July 2022,  represents 1 August 2022, and so on,

Fill in the following table.

Date
 Total Cases
1 July 2022


1 August 2022


1 September 2022


1 October 2022


1 November 2022




(b)	Find a linear regression line using Excel.
(c)	Use the linear regression line found in (b), estimate the number of total confirmed cases on 1 January, 1 February and 1 March 2023.
(d)     Find a quadratic regression using spreadsheet in Excel.