Question

A sequence is defined by the equation a1=50 and an=an-1+(-4) what is term a5?

41
46
30
34

Answer 1

Explanation:

an=an-1+(-4)

a2 = a1 + (-4) = 50 - 4 = 46

a3 = a2 - 4 = 46 - 4 = 42

a4 = a3 - 4 = 42 - 4 = 38

a5 = a4 - 4 = 38 - 4 = 34