The fifth term of a sequence is 80. Every term after the first term of the sequence is double the previous value.
Which equation represents the explicit function for f(n), where n is the term number of the
sequence?
A f(n) = 2(5)"-1
B f(n) = 5(2)»--
Cf(n) = 10(2)n-1
D f(n) = 20(2)"-1