Question

Marlene wrote an arithmetic sequence where
a
1
=
8
and the common difference is
−
3
.

What is a rule for the nth term of this sequence?

Answer 1

The rule for the nth term of this arithmetic sequence can be defined as:

a_n = a_1 + (n-1)d

where a_n is the nth term of the sequence, a_1 is the first term (8 in this case), d is the common difference (-3 in this case), and n is the position of the term in the sequence.