Final answer:
2.2 rounded to the nearest whole number is 2, because the digit after the decimal (2) is less than 5, so you round down.
Step-by-step explanation:
The student has asked what is 2.2 rounded to the nearest whole number. When rounding to the nearest whole number, you look at the first digit after the decimal point. If this digit is 5 or higher, you round up. If it is 4 or lower, you round down. In the case of 2.2, the first digit after the decimal is 2, which is less than 5, so we round down.
Therefore, 2.2 rounded to the nearest whole number is 2.