Question

Which choice is the explicit formula for the following geometric sequence?
0.2, -0.06,0.018, -0.0054, 0.00162
a-a_n=-0.3(0.2)^n-1
b-a_n=-0.2(-0.3)^n-1
c- a_n=0.2(0.3)^n
d- a_n=0.2(-0.3)^n-1
e- a_n=0.3(-0.2)^n-1

Answer 1

I will give Medal!