Geom. Geometric Sequences 3

What does r represent?

• Radical

• Common difference

• Common ratio

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CCSS.HSF.BF.A.2

What does a₁ represent?

• Any term

• First term

• Last term

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CCSS.HSF.BF.A.2

Find the common ratio for the geometric sequence.

• 10
• 1/2
• 2
• 4

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CCSS.HSF.BF.A.2

Is the sequence -432, 72, -12, 2,...geometric?

• yes
• no

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CCSS.HSF.BF.A.2

Write the explicit formula for the geometric sequence.

• a_n = 4(3)^n-1
• a_n = 3(4)^n-1
• a_n = -4(3)^n-1
• a_n = 3(-4)^n-1

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CCSS.HSF.BF.A.2

Find the first four terms of the sequence given the rule:
a_n = 4(5)^n-1

• 20, 100, 500, 2500
• 5, 20, 80, 320
• 4, 20, 100, 500
• 4, 9, 14, 19

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CCSS.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.HSF.BF.A.2

Which formula is used to find the recursive 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

Tags

CCSS.HSF.BF.A.2

Given the sequence:
125, 25, 5, ....
Write the explicit rule:

•  t(n) = (125)(5)⁽ⁿ⁾
•  t(n) = 625(1/5)⁽ⁿ⁾
•  t(n) = 625(5)⁽ⁿ⁾
•  t(n) = 125 + 5n

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CCSS.HSF.BF.A.2

Find the general rule for: 64, -32, 16, -8, …  

• 64(1/2)^n-1
• (-32)^n-1
• 64(-1/2)^n-1
• (32)^n-1

Tags

CCSS.HSF.BF.A.2