Chapter 8.2, Problem 3SP

(a)

To determine

Whether the average monthly electric bills represented by the following table, follow the arithmetic progression,

Year	1	2	3	4
Amount($)	$102.60$	$108.00$	$113.40$	$118.80$

(b)

To determine

The expression for the n th term of the sequence for the data when the average monthly electric bills represented by the following table,

Year	1	2	3	4
Amount($)	$102.60$	$108.00$	$113.40$	$118.80$

(c)

To determine

The average monthly boll for year 6 for the data when the average monthly electric bills represented by the following table,

Year	1	2	3	4
Amount($)	$102.60$	$108.00$	$113.40$	$118.80$