Answer:
the answer is d
Step-by-step explanation:
because Let's see if you understood the definition of an arithmetic sequence. Which of the following is *not* an arithmetic sequence?
5, 2, -1, -4, -7, -10, -13, -16, -19...
4, 4, 4, 4, 4, 4, 4, 4, 4...
2.13, 3.34, 4.55, 5.76, 6.97, 8.18, 9.39, 10.6, 11.81...
1, 1, 2, 3, 5, 8, 13, 21, 34...
