Determine whether each sequence is arithmetic. If so, identify the common difference.

Question

1.) 2,3,5,8

2.) 0.9,0.5,0.1.-0.3

3.)14,-15,-44,-73

4.)-34,-28,-22,-16

Answer 1

2) -0.4 is the common difference

4) 6 is the common difference

1) is not an arithmetic sequence. It's a Fibonacci sequence with each term the sum or the preceding two terms

3) -29 is the common difference.