For items 10 to 15, determine whether the given situation is an arithmetic sequence, a geometric sequence, or neither. Write A for arithmetic, G for geometric, and N for neither. 10. Growth of bacteria on a petri dish 11. 15, 10, 5, 0, -5, - 10, ... 12. Doubling your weekly savings 13. The number of people watching a viral video within an hour 14. Playing the stacking cups game 15. The taxi fare a passenger pays per kilometer traveled 16. What operation is used in obtaining the next terms in a geometric sequence? A. Addition C. Division B. Multiplication D. Subtraction 17. What operation is used in obtaining the succeeding terms in an arithmetic sequence? A. Addition C. Division B. Multiplication D. Subtraction 18. Which of the following terms is closely related to a geometric sequence? A. Common Ratio C. Both A & B B. Common Difference D. None of these. 19. Which of the following terms is closely associated to an arithmetic sequence? A. Common Ratio C. Both A & B B. Common Difference D. None of these. 20. Which of the following sequences is arithmetic? A. 12, -12, -12, -12, . .. C. 12, 252 , 13, 272 , ... B. 32, 8, 2, 1/2 , ... D. 1, 2, 3, 4, 5