Find the nth term

Question

Find the nth term of the geometric sequence whose initial term is 7.5 and common ratio is 7. Answer must be in a function of n 

 

Answer 1

This is just like the other question you asked.

 

The only difference is that we don't have number like 5th or 6th term.

 

We are looking for nth term instead

 

The initial term is the same as the first term which is equal to a, and a = 7.5

 

Common ratio = 7

 

Use the same formula I reminded you of earlier

 

 

a*r ^(n-1)

 

plug in your number

 

an = 7.5 * 7 ^( n-1)

 

 

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