Question 865805
-1/8 =-2  + (4)d
d=15/32
an=a(n-1)+15/32

an = -2 + 15/32(n - 1)
an=-2+15/32n-15/32


-1/8= -2 * r^(4)
r=1/2 or -1/2

Tn = t * r^(n - 1)
It could be geometric or it could be arithmetic