Arithmetic and Geometric Sequences

Find the next three terms in the arithmetic sequence: -33, -24, -15, -6, ...

• -1, 7, 15

• -5, 2, 9

• 3, 12, 21

• -65, -73, -81

Which of the following sequences is geometric?

• -3, 3, -9, 15, ...

• -1, 1, 4, 8, ....

• 1, -5, 25, -125, ...

• 10, 12, 15, 19, ...

What is the common ratio of the sequence -4,12, -36, 108, ...?

• 2

• -2

• 3

• -3

Which of the following is the 8th term of the sequence 4, -8, 16, -32, ...?

• -256

• -512

• -1024

• -2048

Write an equation for the nth term of the geometric sequence:

3, 6, 12, 24, ...

Which of the the following are examples of arithmetic sequence?

What is the common difference of the sequence 2, -1, -4, -7,...?

• -3

• -1

• -2

• 3

An arithmetic sequence is given below.

2, 9, 16, 23, ...

Which is the explicit formula for the n^th term a_n?

• a_n = -7n+9

• a_n = 7n-5

• a_n = 7n-9

• a_n = -7n+5

What is the 67^th term of the following arithmetic sequence.

13, 22, 31, 40, ...

• -445

• 67

• 625

• 607