Answer:
0, 2, 4, 6, 8, 10, etc..
Step-by-step explanation:
Basically any even number or 0
(2x100) (3x10) (2x1) / (4x1)
Arithmetic sequence: must have a constant common difference.
3/20-1/10=(3-2)/20=1/20
5/30-3/20=(10-9)/60=1/60
Difference is not constant, so no.
Geometric sequence: must have a common ratio
30/20 / (1/10) = 15
5/30 / (3/20) = 100/90 = 10/9
ratio is not constant, so no.
The answer is (c) neither geometric nor arithmetic
X can equal -7 or 1
X = -7 and 1