TOPIC 9-3 Independent Practice 8' Application For each sequence, determine whether the sequence is arithmetic {A}. geometric {G}, or neither [N]. 1. 5,25,125,___ 2. E.12.2,-- 3.-111,2.5,113.5,... 4. 3.10311.\" 5. 1,2_4_8,,_, For each of the following geometric sequences, determine both the recursion formula and the general rule for the nth term. Th en use the general rule to calculate the 3"\" term. I 5- 16,11... 7- 3,12,43,-.. For each of the following sequences, determine the indicated geometric means. , 25,000,... 9. 1830, , , , , 5.625,... Determine each geometric series. Use the graphing calculator to verify your results. 10. The sum of the first 12 terms 11. S for the series 5 + 20 + 80 + ... 12. -3(2)*-1 of the sequence: 9, 4.5, 2.25,... -1 13. The ABC company manufactures and sells cellular telephones. The company's gross sales, beginning in the first year Year 1 2 3 4 5 Sales (in millions of US Dollars .48 1.032 2.198 4.726 10.208 of operation, are as follows: a. Is the sales growth for ABC Company a geometric sequence? If so, what is the common ratio? b. If the sales growth pattern continues, what C. What will be the total sales for ABC Company will be the sales for ABC Company in year 12? for years 1 through 12