Unit 11 Review #2

What are the first 4 terms of an arithmetic sequence with a common difference of (-6) if the first term is 76?

• 76, 70, 64, 58
• 76, 82, 88, 94
• 70, 64, 58, 52
• 82, 88, 94, 100

What kind of sequence is the pattern 32, 38, 44, 50, 56, ...?

• arithmetic
• geometric
• neither

Tags

CCSS.HSF.BF.A.2

Given the following sequence, write a formula to determine the nth term.
12, 23, 34, 45, 56

• f(x) = 12x + 11
• f(x) = 11x + 12
• f(x) = 11x + 1
• f(x) = 12x + 1

Tags

CCSS.HSF.BF.A.2

How many coins are in the 30^th stack?

• 92
• 43
• 89
• 60

Tags

CCSS.HSF.BF.A.2

Carey is organizing her books and putting them on shelves. She put 2 books on the first shelf, 8 books on the second shelf, 32 books on the third shelf, and 128 books on the fourth shelf. What kind of sequence is this?

• Geometric
• Arithmetic
• Both
• Neither

Tags

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

Tags

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

Tags

CCSS.HSF.BF.A.2

Which formula is used to find the recursive equation for arithmetic 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

Which formula is used to find the explicit equation for arithmetic 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

What is a₅ in the sequence defined as follows?
a_n = 5 ⋅ 2^(n-1) 

• a₅ = 160
• a₅ = 40
• a₅ = 10
• a₅ = 80