PARTI: Arithmetic Sequences 1. Which of the following is an EXAMPLE of an arithmetic sequence? A. 1, 3, 5, 9, ... B. 2, 4, 6, 8, .. C. 8, 9, 12, 3,... D. 3, 8, 9, 23 2. Which of the following is NOT AN EXAMPLE of an arithmetic sequence? A. 2, 5, 8, 11. B.-1, -3, -5, -7 C. 4, 2, 0, -2, D. 5. 3. 1,7... 3. What is the 15th term of the sequence 3, 6, 9, 12, ...? A. 30 B. 35 C. 40 D. 45 What is the 11" term of the sequence 11, 5, -1, -7, ...? A 49 B. -45 C. 44 D-40 5. What is the common difference of 35.5, 36.75, 38, 39.25? A 1.75 B. 1.5 C. 1.25 D1 6. What is the common difference of %4%. %. 1, ...? A. 1/4 B. 1/2 C. 3/4 D. 1 7. What are the two arithmetic means of 5, A 10.15 B. 11, 17 C. 12, 19 D. 13, 21 What are the three arithmetic means of 6, A. 8.5, 11, 13.5 B. 8.75, 11.5. 14 C. 9, 12, 15 , , D. 10. 13.5, 14 9. What is the sum of the first 10 terms of the sequence 1.6, 11. ...? A 225 B. 235 C. 245 D. 255 10. What is the sum of the first 100 natural numbers? A. 5 055 B. 5 050 C. 5 045 D. 5 040 - 237 16?​