Question

Which shows a function for the sequence 16, 8, 4, 2, …?

A. f(x)=16 ∙ (2) (^x−1)
B. f(x)=16 ∙ ( 1/3 ) ^(x−1)
C. f(x)=16 ∙ ( 1/2 ) ^(x−1)
D. f(x)=16∙ ( 1/4 ) ^(x−1)

Answer 1

C

Explanation:

16, 8, 4, 2, …

a = 16

r = 8/16 = ½

f(x) = 16 × (½)^(x - 1)