PRACTICE & PROBLEM SOLVING PRACTICE
Tell whether or not each sequence is an arithmetic
sequence. If it is, give the common difference, d.
SEE EXAMPLE 1
17.1. 15, 29, 43, 57...
yes 14 every
18. 77, 64, 51, 38, 25. -.-
19, 1.-2.3.4.5.
20. 3,6,9, 12, 15, ...
21. 3, 6, 9, 15, 18,...
22. 37, 34, 31, 29, 26, ...
23, 93, 86, 79, 72, 65, ...
24. 45, 54, 63, 72, 81, ...
Write a recursive formula and an explicit formula
for each arithmetic sequence. SEE EXAMPLES 2 AND 3
25. 12, 19, 26, 33, 40, ...
26.4,5, 14, 23, 32, ...
27. 62, 57, 52, 47, 42, ...
28.-15, -6, 3, 12, 21, ...
29.
ty
12
.
8
4
o
4