Sequences Review

What is the explicit formula for the sequence:

2, -8, 32, -128.

• a_n = 2 ⋅ (-4)^n-1

• a_n = -4⋅(2)^n-1

• a_n = a_n-1 ⋅ (-4)

• None of the above

Tags

CCSS.HSF.LE.A.2

What is the recursive formula for the sequence:

r = 0.5 , a₁ = 8

• a_n = 0.5 ⋅ (8)^n-1

• a_n = 8 ⋅(0.5)^n-1

• a_n = a_n-1 ⋅ (0.5)

• None of the above

Tags

CCSS.HSF.BF.A.2

What is the explicit formula for the sequence:

r = 0.5 , a₁ = 8

• a_n = 0.5 ⋅ (8)^n-1

• a_n = 8 ⋅(0.5)^n-1

• a_n = a_n-1 ⋅ (0.5)

• None of the above

Tags

CCSS.HSF.BF.A.2

What is the explicit formula for the sequence:

d = -4 , a₁ = 7

Select ALL that apply

• a_n = 7 - 4(n-1)

• a_n = -4n + 11

• a_n = -4 + 7(n-1)

• a_n = 7 ⋅ (-4)^n-1

Tags

CCSS.HSF.BF.A.2

Type the explicit formula for the geometric sequence:

a₃ = 8 a₆ = -64

You do NOT need a_n in your answer

Use x instead of n (Quizizz coding doesn't use n).

Mathematical Equivalence

ON

Tags

CCSS.HSF.BF.A.2

Type the explicit formula for the arithmetic sequence:

a₇ = -22 a₁₁ = -34

You do NOT need a_n in your answer

Use x instead of n (Quizizz coding doesn't use n).

Mathematical Equivalence

ON

Tags

CCSS.HSF.BF.A.2

Match the following

• a₁ = 0.5

  a_n = a_n-1 ⋅ 8

• a_n = a_n-1 + 3

  a₁ = 5

• a_n = 5 + 3(n-1)

• a_n = 0.5 ⋅ (8)^n-1

• a₁ = 8

  a_n = a_n-1 ⋅ 0.5

• a_n = 8 ⋅ (0.5)^n-1

• a_n = -20 - 6(n-1)

• a₁ = 24

  a_n = a_n-1 ⋅ 3

• a_n = 24 ⋅ (3)^n-1

• a₁ = -20

  a_n = a_n-1 - 6

Tags

CCSS.HSF.LE.A.2

In the sequence: -2, 5, 12, ...

124 is the _______ term of the sequence

• 18th

• 19th

• 20th

• 21st

Tags

CCSS.HSF.BF.A.2

In the sequence: 26, 18, 10, ...

-190 is the _______ term of the sequence

• 28th

• 29th

• 30th

• 31st

Tags

CCSS.HSF.BF.A.2

Sam purchased a $30,000 car for his business. The car depreciates 30% each year.

What is a formula for the value of his car after x years?

Note: Write your answer as an equation for a sequence.

Mathematical Equivalence

ON

Tags

CCSS.HSF.BF.A.2