Final answer:
The correct function to round up the total sales in cell B22 to 0 decimal places is ROUNDUP(B22, 0), which rounds the value up to the nearest whole number.
Step-by-step explanation:
The student is asking for assistance with a formula in a spreadsheet software like Microsoft Excel. Specifically, they are looking to use the ROUNDUP function to round up the total sales for January, which is found in cell B22, to 0 decimal places. The correct answer to this problem is option a) ROUNDUP(B22, 0), which will round the number in cell B22 up to the nearest whole number.
Rounding is a mathematical concept frequently used in various applications, including spreadsheet calculations, to approximate numbers to a specified level of precision. The ROUNDUP function is particularly useful when one wishes to ensure that the value is always rounded up, different from the standard ROUND function which may round a number up or down based on the value of the digit after the specified decimal place.