Question

A sequence is defined by f1=5 and fn=4fn-1 for n2. Which of the following statements shows an explicit (nth term) for, definition of f ?
a. fn=5+4n-1 for n1
b. fn=5+4n for n0
c. fn=54n for n0
d. fn=54n-1 for n1

Answer 1

D fn=54n-1 for n1 that’s why d is the answer