Question

Which exponential function goes through the points (1, 16) and (4, 128)?

f(x) = 4(4)^x
f(x) = 8(2)^x
f(x) = 8(2)^−x
f(x) = 4(4)^−x

Answer 1

f(x) = 8(2)^x

Answer 2

I believe it the first one