Now that both the Accounts_Payable and Vendors data sets for Roger Company are joined together right click a null cell in the CITY column and select the Display All Records Containing function identify how many transactions were made in the Accounts Payable database using unauthorized vendors (refer to Section 4 of the tutorial for additional help) Number of transactions Now that both the Accounts_Payable and Vendors data sets for Roger Company are joined together right click a null cell in the CITY column and select the Display All Records Containing function identify how many transactions were made in the Accounts Payable database using unauthorized vendors (refer to Section 4 of the tutorial for additional help) Number of transactions