Yes, -3 is both a rational number and an integer.
yes it is both rational and an integer
-16 is both a negative integer and a rational number
Every integer is.
Yes and yes. It is an integer and so it is also a rational number.
All integers are rational numbers.
It is both.
By definition, an irrational number is a number that is not rational, or in other words a number that cannot be expressed as an integer divided by another integer. A number cannot be both "rational" and "not rational."
The number 3 is a rational number (as is any integer).
It can be both.