Arithmetic & Geometric Sequences

Is this a sequence: 78, 785, 7855, 78555, ...?

• Yes

• No

Tags

CCSS.HSF.BF.A.2

Is the sequence of 6, 18, 54... arithmetic, geometric, or neither?

• Arithmetic

• Geometric

• Neither

Tags

CCSS.HSF.BF.A.2

Is the sequence of 17, 9, 1, -7, ... arithmetic, geometric, or neither?

• Arithmetic

• Geometric

• Neither

Tags

CCSS.HSF.BF.A.2

Identify the common difference.
97, 86, 75, 64, ...

• 8
• 11
• -11
• -8

Tags

CCSS.HSF.BF.A.2

Find the common ratio: 64, -16, 4, -1, ...

• r = -8
• r = -1/4
• r = -4
• r = 4

Tags

CCSS.HSF.BF.A.2

Create the explicit formula for the sequence:

2, 8, 14, ...

• T_n = 2 + 6n

• T_n = -6 + 6n

• T_n = 6n - 4

• T_n = 4 - 6n

Tags

CCSS.HSF.BF.A.2

What is the explicit rule for the sequence:

11, 22, 44, 88...

• T_n = 2(11)^n-1

• T_n = 11(2)ⁿ⁺¹

• T_n = 11(2)^n-1

• T_n = 2(11)ⁿ⁺¹

Tags

CCSS.HSF.BF.A.2

Find the 22nd term. a₁=10, d=5

• 115
• 200
• 10
• 220

Tags

CCSS.HSF.BF.A.2

Find the 10th term of this sequence:
{96, 48, 24, 12, ... }

• 3/16
• 1/2
• 6
• 3

Tags

CCSS.HSF.BF.A.2

The population of a city is decreasing by 3% every year. If the population is 125,000 in the 1st year, how many will remain in the 10th year?

• 92,178 people

• 95,029 people

• 167,990 people

• 163,096 people

Tags

CCSS.HSF.BF.A.2