Question

What is the seventh term of a sequence whose first term is 1 and whose common ratio is 3?

Answer 1

729

Explanation:

The formula for these types of problems is a(n)= (a)(r^n-1) where a is the value of the first term, n is the term you wish to find, and r is the common ratio. Once you plug in the numbers, you will get a(n)= (1)(3^7-1), or a(n)= (1)(3^6)

After you solve this, you will get 729.

Answer 2

(1)(3)^(7-1)
=3^6
=729