1.Given the arithmetic sequence a_n= 4 + 8(n 1), what is the domain for n?

2.What is the sum of a 7-term geometric series if the first term is 6, the last term is 24,576, and the common ratio is 4?

3.What is the 7th term of the geometric sequence where a₁= 625 and a₂= 125?

4.Given the arithmetic sequence a_n= 5 + 3(n 1), what is the domain for n?

5.A new video game is expected to sell 120 copies the first hour at a local game store. After that, the sales will follow the function s(x) = 15(x 1) where x is the number of hours. What is the function that shows total sales, including the first hour?

6.Find the sum of a finite geometric sequence from n = 1 to n = 7, using the expression 4(6)^{n 1}.

7.Every day, there are 5 times more likes on an internet video of a dog which is modeled by the function c(n) = (5)^{n 1}, where n is the number of days since the video posted. On the first day, there were 103 likes. What is the function that shows the number of likes each day?

8.Given the geometric sequence a_n= 3(4)^{n 1}, which of the following values for n lies in the appropriate domain for n?