Question

Use the formula for the general term (the nth term) of a geometric sequence to find a(sub5) with the given first term a(sub1)=9, and a common ratio, r=5sub=subscript

Answer 1

The general expression for the n terms :

`a_n=a_1r^(n-1)`

From the given data :

first term = 9, Common Ratio: r = 5

we need to find the fifth term : n = 5

Substitute the given value in the expression for