Sequences/Average Rate of Change

Which of the following is NOT an arithmetic sequence?

• 11, 14, 17, 20

• 2, 4, 8, 16

• 5, 2, -1, -4

Write the explicit formula for the sequence shown below.

3, -3, -9, -15

Write the explicit formula for the sequence shown below.

1, 6, 11, 16,...

What is the 20th term of the sequence shown below?

7, 4, 1,...

• -49

• 50

• -50

• -51

Given d = -3 and a₁ = 4:

What are the first 5 terms of the sequence?

• -3, 1, 5, 9, 13

• 4, 1, -2, -5, -8

• 4, 7, 10, 13, 16

• -3, -7, -11, -15, -19

An ______________sequence is a sequence of numbers in which the difference between any two consecutive terms is a constant. 

• Geometric Sequnce

• Arithmetic Sequence

A _____________sequence is a sequence of numbers in which the ratio between any two consecutive terms is a constant. 

• Geometric Sequnce
• Arithmetic Sequence

What is the difference between an arithmetic sequence and a geometric sequence?

• One is the sum of the numbers and one is just a list of numbers
• One has a common difference and one has a common ratio.
• One you can write an nth term and one you cannot.
• None of these are correct.

What kind of sequence is the pattern 400, 200, 100, 50, 25, ...?

• Arithmetic
• Geometric
• Neither

5, 15, 45, 135 is a ...

• Geometric sequence with r = 3

• Arithmetic sequence with d = 10

• Arithmetic sequence with d = 3