Here's the question you clicked on:
sammy90210
Find an explicit rule for the nth term of the sequence. 9, 36, 144, 576, ... an = 9 • 4n - 1 an = 4 • 9n - 1 an = 9 • 4n an = 9 • 4n + 1
this is the same type as previous qn!!just do it !!
Lol.....u see it is a G.P with common ratio 4 \[an=a*r ^{n-1}\] \[= 9 * 4^{n-1}\]