Answer:
2. 27
3. Option C. 3, 5, 9, 17, 33, ...
Step-by-step explanation:
2. The sequence is defined by the explicit function 
Therefore, the 5th term i.e.
of the sequence.
(Answer)
3. The explicit definition is 
Hence, 



Therefore, the option C is the right sequence. (Answer)
Answer:
D. All real numbers.
Step-by-step explanation:
This expression can have any real number assigned to x.
Answer: Raise values of y by 4
Step-by-step explanation: Depends how a is incorporated in the parent function.
Assuming it is : y= √x + a
A will rise all the values of y by 4