Powers of 2 are ...
... (x, 2^x) ∈ {(0, 1), (1, 2), (2, 4), (3, 8), (4, 16), (5, 32), (6, 64), (7, 128), (8, 256), (9, 512), (10, 1024)}
By the rules of exponents, ...
... 1/a^b = a^-b
Using the above table, ...
a) 1 = 2^0
b) 1/4 = 2^-2
c) 1/64 = 2^-6
d) 1/256 = 2^-8
e) 64 = 2^6
f) 1/16 = 2^-4
g) 256 = 2^8
h) 1/1024 = 2^-10