Question

Write a recursive formula for each sequence. 2.6, 5.2, 7.8, 10.4, ... Oa. q = 2.6, a, = 2.60,- 1. n 22 b. a = 2.6, 4, = 20,- 1-0.6, n 2 2 Oc. Q = 2.6. 4, = a + 2.6. n 2 2 d. a = 2.6, 4,= 4, 1-2.6, 122

Answer 1

We can see that the common difference is equal to 2.6 (5.2 -2.6 = 2.6, 7.8 - 5.2 = 2.6). Since it is an arithmetic sequence d = 2.6 and the recursive formula would be: an = an-1 + 2.6

So, the answer is the option C.