-2, -12, -72, -432 find the 8th term

Question

0.2, 1.6, 12.8, 102.4 find the 6th term

24, 12, 6, 3 find the 7th term

Answer 1

looks like all are geometric sequences

for a GS
term(n) = a r^(n-1)

I will do the 2nd one, you do the others
a = .2, r = 1.6/.2 = 8

term(6) = ar^5
= .2(8)^5
= .2(32768)
= 6553.6