CCSS.Math.Content.HSF.BF.A.2

Which formula is used to find the explicit equation for geometric sequences?

• a_n = a_n-1 + d
• a_n = a_n-1 * r
• a_n = a₁ + d(n-1)
• a_n = a₁ * r^n-1

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CCSS.Math.Content.HSF.BF.A.2

Find the 32nd term of this sequence.
34, 37, 40, 43, ...

• 32
• 64
• 127
• 356

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CCSS.Math.Content.HSF.BF.A.2

Find the common ratio: 4, -16, 64, -256, ...

• r = -4
• r = 2
• r = -2
• r = 4

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CCSS.Math.Content.HSF.BF.A.2

What is the common ratio for the sequence:
28, 14, 7, 3.5...

• 2
• 1/2
• -14
• -7

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CCSS.Math.Content.HSF.BF.A.2

Which kind of sequence has a common difference?

• Arithmetic
• Geometric

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CCSS.Math.Content.HSF.BF.A.2

The next two terms of the sequence 4,7,10,13 are

• 16 and 19
• 15 and 19
• 16 and 18
• 15 and 18

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CCSS.Math.Content.HSF.BF.A.2

Determine if the following sequence is arithmetic or geometric.

6, 30, 150, 750, ...

• Arithmetic

• Geometric

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CCSS.Math.Content.HSF.BF.A.2

 $a_n=a_1r^{n-1}$  

Given the formula for a geometric sequence,  $a_n$   stands for

• common difference

• wanted term

• common ratio

• first term

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CCSS.Math.Content.HSF.BF.A.2

Write a recursive formula for the following sequence:

16,8, 4, 2,...

• a₁=16

  a_n=a_n-1 (2)

• a₁=16

  a_n=a_n-1 (1/2)

• a₁=16

  a_n=a_n-1 + (1/2)

• a₁=16

  a_n=a_n-1 - 8

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CCSS.Math.Content.HSF.BF.A.2

Find the sum of the following arithmetic prgression 50,46,42, .... to 10 terms

• 320

• 144

• 525

• 162

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CCSS.Math.Content.HSF.BF.A.2