Question

PLEASE FRICKING HELP ME IF YOU SEE THIS
Write an explicit function to represent the following sequence.
3,9, 27, 81,...

Answer 1

Answer:

an=3n

Step-by-step explanation:

r=3This is the form of a geometric sequence.an=a1rn−1Substitute in the values of a1=3and r=3.an=(3)⋅(3)n−1Multiply 3by (3)n−1an=3n