The sequence below shows the number of bacteria Arjun observed each hour for a science
experiment:
5, 20, 80, 320, 1,280,
Which recursive function describes the number of bacteria observed at the nth hour?
f(1) = 1
f(n+1)=4f(n)
f(1) = 1
f(n+1)=5f(n)
f(1) = 5
f(n+1)=4f(n)
f(1) = 5
f(n+1)=2f(n) + 10