Question

Find the first five terms of the arithmetic sequence defined as follows:
an=an-1-31; a₁ = 152

Answer 1

152, 121, 90, 59, 28

Explanation:

using the given recurrence formula and a₁ = 152 , then

a₂ = a₁ - 31 = 152 - 31 = 121

a₃ = a₂ - 31 = 121 - 31 = 90

a₄ = a₃ - 31 = 90 - 31 = 59

a₅ = a₄ - 31 = 59 - 31 = 28