Determine whether each sequence is arithmetic, geometric, or neither. if the sequence is arithmetic, give common difference; if geometric, give the common ratio.

a. 1.24, 19, 14, 9, 4...
b. 6. 120, 60, 30, 15...
c. 11.5 ,8, 13, 21, 34...
d. 2.227, 29, 23, 2...
e.7.12, 14, 16, 18...
f. 12.1, 1, 2, 3, 5, 8...
g.3.1, -5, -11, -17...
h. 8.8, 3, -2, -7...
i. 13.4, 12, 36, 108...
j. 4.8, 12, 18, 27...
k.9.20.5, 12.4, 4.3, -3.8, -11.9
l.14.-44, -25, -6, 13, 32...
m. 5.8, -8,8,-8,8...
n. 10.4, 0, -4, -8, 8
I. 15.0.4, 0.04, 0.0004...​