Question

What is the fifth term of a sequence whose first term is 5 and whose common ratio is 3?
I'm confused

Answer 1

\[5,5\times 3,5\times 3^2,5\times 3^3,...\]

Answer 2

where is a formula

\[a _{n}=a _{1}*r ^{n-1}\]
you have
\[a _{5}=5*3^{5-1}\]

all you need to do is calculate now;)

Answer 3

First term 5.
Second term 5*3
Third term 5*3^3
Fourth term 5*3^3
Fifth term 5*3^4 = 5*81 = ...

Answer 4

405

Answer 5

Right!