DOL: Arithmetic vs Geometric Explicit Formula

• arithmetic
• neither
• geometric

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CCSS.HSF.BF.A.2

• arithmetic
• neither
• geometric

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CCSS.HSF.BF.A.2

Which kind of sequence has a common ratio?

• Arithmetic
• Geometric

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CCSS.HSF.BF.A.2

Which kind of sequence has a common difference?

• Arithmetic
• Geometric

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CCSS.HSF.BF.A.2

Write the explicit formula for the sequence.

9, 5, 1, -3, ...

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CCSS.HSF.BF.A.2

Write the explicit formula for the sequence.

216, 72, 24, 8, ...

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CCSS.HSF.BF.A.2

The first three terms of an arithmetic sequence are 3, 11, and 19. Which function represents the sequence?

• a_n = 8 + 3(n-1)

• a_n = 8(3)^n-1

• a_n = 3 + 8(n-1)

• a_n = 3 + 8n

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CCSS.HSF.BF.A.2

A geometric sequence has as its first three terms 48, 12, and 3. Which function represents the sequence?

• a_n = 48(1/4)^n-1

• a_n = 48 - (n-1)36

• a_n = 48(4)^n-1

• a_n = 3(4)^n-1

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CCSS.HSF.BF.A.2

The fourth, fifth, and sixth terms of an arithmetic sequence are 56, 49, and 42. Which function represents the sequence?

• a_n = 56 - 7(n-1)

• a_n = 42 + 7(n-1)

• a_n = 77 - 7(n-1)

• a_n = 42(7)^n-1

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CCSS.HSF.BF.A.2

A geometric sequence has a₁ = 3 and r = 2. What is the Explicit Rule for a_n and use it to find the 10th term.

• a_n = 3 + 2(n-1)

  a₁₀ = 21

• a_n = 2(3)^n-1

  a₁₀ = 39366

• a_n = 3(2)^n-1

  a₁₀ = 1536

• a_n = 2 + 3(n-1)

  a₁₀ = 29

Tags

CCSS.HSF.BF.A.2