Final answer:
Integers are whole numbers and can be positive, negative, or zero. The numbers 0, 8.0, and -17 are integers because they are whole numbers without decimal or fractional parts; 9.42 is not an integer as it has a decimal part.
Step-by-step explanation:
The question asks which numbers are integers. An integer is any number that can be written without a fractional component. This means it can be positive, negative, or zero, but it must not have any decimal or fractional parts.
- A. 0 is an integer because it represents a whole number without any fractional or decimal parts.
- B. 8.0 is also an integer because even though it's written as a decimal, it's equivalent to 8, which is a whole number.
- C. 9.42 is not an integer because it has decimal parts.
- D. -17 is an integer because it is a whole number even though it is negative.
Therefore, the numbers that are integers are 0, 8.0, and -17.