5 • 3^n

A. 15, 30, 45, 60*
B. 5, 15, 45, 135
C. 0, 15, 45, 135
D. 15, 45, 135, 405

2 answers

Help me please =(
come on - just plug in values for n.
5*3^1 = 15
5*3^2 = 45
...