Question

A sequence is defined by the function F(n) = F(n -1) +5, where n represents the number of the term for n >1, and f(1) = -4. What are the first four terms of the sequence?

1, 6, 11, 15
-4, 0, -1, -2
0, -1, -2, -3
-4, 1, 6, 11

Answer 1

4th option

Explanation:

Using the recursive rule and f(1) = - 4 , then

f(2) = f(1) + 5 = - 4 + 5 = 1

f(3) = f(2) + 5 = 1 + 5 = 6

f(4) = f(3) + 5 = 6 + 5 = 11

The first 4 terms are - 4, 1, 6, 11