Final answer:
Without further context, the result of the expression 'if+28' cannot be determined. It is not a standard mathematical expression, and 'if' is not defined. Therefore, the result is not a calculable numerical value.
Step-by-step explanation:
The expression provided seems incomplete and it is not clear what operations are meant to be performed. Given if+28, this is not a standard arithmetic expression or algebraic equation that can be evaluated for a numerical result. Without additional context or clarification about what if represents (e.g., a variable, an abbreviation, or a typo), we cannot determine a numerical result from if+28. Among the options provided, the answer appears to be 1) Cannot be determined, as there is insufficient information to proceed with any mathematical operation.