Sequences Review

Which sequence is geometric?

• 5, 10, 15, 20,...

• 100, 200, 400, 800,..

• 3, 7, 15, 31, 63,...

• -50, -60, -70, 80,....

Tags

CCSS.HSF.BF.A.2

What is the difference in the sequence: 20, 0, -20, -40,...

• d = -20

• d = 20

• d = 0

• d = 2

Tags

CCSS.HSF.BF.A.2

What is the difference in an arithmetic sequence where the 4th term is 10 and the 10th term is 46?

• d = 6

• d = 5

• d = 7

• d = 4

Tags

CCSS.HSF.BF.A.2

Which has a ratio that is between 0 and 1?

• 500, 1000, 2000, 4000,....

• 500, 100, 20, 4,...

• 500, 1000, 1500, 2000

• 500, 400, 300, 200,...

Which is the correct formula for the arithmetic sequence: 40, 33, 26, 19,....

• f(n) = -7(n-1) + 40

• f(n) = 7(n-1) + 40

• f(n) = 40(n-1) +7

• f(n) = 40(n-1) - 7

What could be the information if the formula for an arithmetic sequence is a(n) = 5(n-3) + 7

• 3rd term = 7, d = 5

• 1st term = 7, d = 5

• 3rd term = 5, d = 7

• 1st term = 5, d = 7

Which geometric sequence would have a negative r?

• 5, -10, 20, -40, ....

• -5, -10, -20, -40,....

• -5, -10, -15, -20,...

• 5, 10, 20, 40,...

Tags

CCSS.HSF.BF.A.2

Solve for the 7th term with the formula: f(n) = 30 + 20(n-1)

• f(7) = 150

• f(7) = 120

• f(7) = 170

• f(7) = 149

Solve for the 7th term in the sequence: a(n) = 10(1.4)^n-1

• a(7) = 75.3

• a(7) = 105.4

• a(7) = 105413504

• a(7) = 7529536

Find the 11th term using the explicit formula: f(n) = 3(n-4) + 6

• f(11) = 27

• f(11) = 23

• f(11) = 39

• f(11) = 25

Tags

CCSS.HSF.BF.A.2