Question 1) The answer is B because all the points correlate.
Question 2) Your numbers are: 2,2,4,5,6,7,8, and 9. Since it says "1 decimal place" the answer is 5.4
Question 3) Your numbers are: 1,2,3,3,4,5,7, and 8. Start crossing them out. 1-2-3-3-4-5-7-8 2-3-3-4-5-7 3-3-4-5 3-4 Since your left with 2 numbers, you go in between. 3.5