Question

32, 16, 8, 4, 2, ...

Find the common ratio of the given sequence, and write an exponential function which represents the sequence.
A. 2; f(x)=32(2)^x-1

B. 1/2; f(x)=32^x-1

C. 2; f(x)=32(1/2)^x-1

D. 1/2; f(x)=32(1/2)^x-1

Answer 1

The common ratio is 1/2 and the first term is 32
f(x)=A1×(common ratio)^x-1
f(x)=32×(1/2)^x-1
Your answer is D.