Sequences

Which of the following is not an arithmetic sequence?

• 1/2, 1, 3/2, 2

• 11, 14, 17, 20

• 2, 4, 8, 16

• 5, 2, -1, -4

Tags

CCSS.HSF.BF.A.2

Write the explicit formula for the sequence shown below.

3, -3, -9, -15

• a_n=6n-3

• a_n=9-6n

• a_n=9-3n

• a_n=3n+6

What is the 20^th term of the arithmetic sequence shown below.

7, 4, 1,...

• -49

• 50

• -50

• -51

Tags

CCSS.HSF.BF.A.2

Write a formula for the following sequence:

5, 8, 11, 14, 17...

• a_n = 3n + 2

• a_n = 8 - 5n

• a_n = 5(3)^n-1

• a_n = 5 + 3n

Tags

CCSS.HSF.BF.A.2

Write a formula for the following sequence:

4, 12, 36, 108...

• a_n = 4(3^n-1)

• a_n = 4(3ⁿ)

• a_n = 4+3n

• a_n = 4(3n)

Tags

CCSS.HSF.BF.A.2

What is the next term of the sequence: 1/5, 1/18, 1/31, 1/44,...

• 57

• 1/57

• 57/1

• None of the above

What is the 20th term of the Sequence: 1, 4, 9, 16,...

• 200

• 400

• 40

• 450

Tags

CCSS.HSF.BF.A.2

What kind of sequence is the pattern 15, 17, 20, 24, 29, ...?

• Arithmetic
• Geometric
• Neither

Tags

CCSS.HSF.BF.A.2

A sequence can be generated by using a_n = 5a_(n-1)

where a₁ = 3

and n is a whole number greater than 1.

What are the first three terms in the sequence?

• 3, 15, 45

• 5, 8, 11

• 5, 15, 45

• 3, 15, 75

Tags

CCSS.HSF.BF.A.2

A geometric sequence has a 3rd term of 6 and a 6th term of 48. Find the 8th term in the sequence.

• 384

• 76

• 192

• 384