Answer:
H = a8 = 2^(8-1) = 2^7
Step-by-step explanation:
This is a geomtric sequence
an = a1 r^(n-1)
a1 =1 and r=2
an = 2 ^(n-1)
A=a1 =1
H = a8 = 2^(8-1) = 2^7 = 128
