Personal Finance Course Math Help!

[SoNotAMathGeek]

Can you please answer the following question:

For each series, identify the type as geometric, arithmetic or neither:
(a)Sn = 6 9 12 15 …
(b)Sn = 7 14 28 …
(c)Sn = 768 384 192 …
(d)Sn = 5 1 – 3 - …
(e)Sn = 2 4 6 8 …
(f)Sn = 3 6 18 36 …
(g) Sn = 5 25 125 625 …
(h)Sn = -1 – 3 – 5 – 7 …

Thank You SO MUCH!

[Croasis]

a) arithmetic. adds 3 to get the next
b) geometric. multiply by 2 to get the next
c) geometric. multiples by 1/2 to get the next
d) armithetic. adds -4 to get the next
e) arithmetic. adds 2 to get the next
f) neither. the process was x2, x3, x2
g) geometric. multiplies by 5 to get the next
h) arithmetic. adds -2 to get the next