2.) What is the missing number in the pattern? 3,9,__,21,27

3.) What is the 6th term in the sequence using the first three numbers 3, 6,
9..?

4.) What is the 5th term of the sequence with the given rule? 1, 3, 5, 7,_

5. Find the 35th term in the arithmetic sequence 3, 9, 15, 21,...​