Final answer:
Bushra should use the IF function or filter function in Excel to eliminate all percentages above the target success rate of 95% for each server backup.
Step-by-step explanation:
The function that Bushra should use to eliminate all percentages above the target is the IF function. In this case, Bushra can use the IF function to check if the success rate of each server backup is above 95%, and if it is, eliminate that percentage. The IF function would look like this:
=IF(A1>95%, A1,0)
This formula checks if the value in cell A1 is greater than 95%. If it is, it returns the value in cell A1, and if it isn't, it returns 0.
Alternatively, Bushra could use a filter to achieve the same result. The filter function allows you to apply a condition to a range of data and only display the rows that meet the condition. In this case, Bushra could use the filter function to only display the rows where the success rate is not above 95%. The filter function would look like this:
=FILTER(A:A, A:A<=95%)
This formula filters the values in column A and only displays the values that are less than or equal to 95%.