Question

Consider the sequence shown. n 1 2 3 4 5an 4 8 16 32 64 Which function represents this sequence? A. f(n) = 2^n-1 B. f(n) = 4^n-1 C. f(n) = 2(4)^n-1 D. f(n) = 4(2)^n-1

Answer 1

ok

$f(n)=2^{n\text{ - 1}}$$f(n)=4^{n\text{ - 1}}$

or

$\text{ f(n) = 4}^n\text{ - 1}$$\text{ f(n) = 4(2)}^{n\text{ - 1}}$