Step-by-step explanation:
The domain of the function is all real numbers less than or equal to ā2 - FALSE;
The domain of the function is all real numbers less than or equal to 9 - FALSE;
The range of the function is all real numbers less than or equal to ā2 - FALSE;
The range of the function is all real numbers less than or equal to 9 - TRUE.
PS. the domain is (-ā;+ā); the range is (-ā;9].