Home > CCA > Chapter 7 > Lesson 7.1.1 > Problem7-15

7-15.
1. For parts (a) and (b), find a recursive equation in an form for each sequence. (For a reminder about an form see the Math Notes box in Lesson 5.3.2.) For parts (c) and (d) find an explicit equation for each sequence. Homework Help ✎

1. 108, 120, 132, …

2. ,,, …

3. 3741, 3702, 3663, …

4. 117, 23.4, 4.68, …

a1 = 108a
an+1 = an+12

$a_1=\frac{2}{5}$

a(n + 1) = 2an

Is the sequence arithmetic or geometric?

Is the sequence arithmetic or geometric?