Sequences

Given the sequence 2, 8, 14, 20, 26, ... What is the common difference?

• 2

• 4

• 6

• 8

What are the next four terms of the arithmetic sequence 122, 111, 100, ...?

• 89, 78, 67, 56

• 95, 90, 85, 80

• 92, 88, 84, 80

• 99, 88, 77, 66

What does a₁ represent?

• Any term

• First term

• Last term

What is the eleventh term of an arithmetic sequence in which a1 = 3 and d = 6?

• 63

• 39

• 69

• 36

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.

Is this a graph of an arithmetic or a geometric sequence?

• Arithmetic

• Geometric

What does r represent?

• Radical

• Common difference

• Common ratio

Is the sequence geometric? If so, identify the common ratio.

6, 12, 24, 48

• yes, 2

• yes, -2

• yes, 4

• no

Find the common ratio for the geometric sequence.

• 10
• 1/2
• 2
• 4

Find the missing term in the geometric sequence: 8, 20, 50, 125, _____.

• 75

• 200

• 250

• 312.5