Answer:b is the right choice hopefully dont be mad if it is wrong
Step-by-step explanation:
A variable represents an unknown number
Answer:
The set of all real numbers
Step-by-step explanation:
The domain is the set of all real numbers (both positives and negatives including zero.
You can see the answer from the picture
You need to use pemdas so first you do inside the parenthesis 6+21=27 then you add 4 27+4=31 that is your answer