Question

What is the nth term rule of the linear sequence below?
27, 25, 23, 21, 19, ...

Answer 1

Explanation:

Comment

This is an arithmetic series. It has the following givens.

a = 27 The first term

d = - 2 The difference between one term and the one behind it.

n = quite small

Tn = a + (n - 1)*d

tn = 27 - 2n + 2

tn = 29 - 2n