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 next three terms in the arithmetic sequence: 25, 34, 43, 52, ...

• 63, 72, 81
• 79, 88, 97
• 70, 79, 88
• 61, 70, 79

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

Geometric Sequences have a common...

• difference
• ratio

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

For each sequence, state if it is arithmetic, geometric, or neither.
−34, −26, −18, −10, −2, ... 

• Arithmetic
• Geometric
• Neither

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

Decide if the sequence is arithmetic, geometric or neither:
11, 21, 31, 41, . ..

• Arithmetic
• Geometric
• Neither

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

Find the common ratio for the geometric sequence.

• -4
• 4
• 1/4
• -1/4

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

Find the 22nd term of the following sequence:
5, 8, 11, ...

• 14
• 68
• 63
• 71

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

Find the first 6 terms of the sequence

• 1, 2, 6, 18, 54, 162

• 2, 6, 18, 54, 162, 486

• -2, -6, -18, -54, -162, -486

• -2, 1, 4, 7, 10, 13

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

This is an arithmetic sequence. 5, 2, –1, –4, . . .

What is a₇ ?

• -13

• -11

• -18

• -22

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

In a certain arithmetic sequence, a₅ = 12 and a₆ = 16. What is a₁ ?

• -8

• -4

• 4

• 8

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