Alg 1 Final Review #3

Create the explicit formula for the sequence:

2, 8, 14, ...

• a_n = 2 + 6n

• a_n = -6 + 6n

• a_n = 6n - 4

• a_n = 4 - 6n

Which of the following is an explicit function for the sequence: 3, 8, 13, 18, 23, 28

• f(n) = 3n + 5

• f(n) = 5n - 2

• f(n) = 5n + 2

• f(n) = -2n + 5

• (12, 15)

• (4, 12)
• (5, 12)
• (5, 10)

• (7, 3)

• (3, 7)

• (2, 7)

• (3, 6)

Given the first five terms, write the recursive formula.
15, 12, 9, 6, 3 ....

• a₁ = 15
  a_n = a_n-1 + 3

• a₀ = 15
  a_n = a_n-1 + 3

• a₁ = 15
  a_n = a_n-1 - 3 

• a₀ = 15
  a_n = a_n-1 - 3

Given the first four terms, write the recursive formula.

• a₁ = 4
  a_n = a_n-1 -20

• a₁ = 20
  a_n = a_n-1 + 4

• a₁ = 4
  a_n = a_n-1 - 4 

• a₁ = 20
  a_n = a_n-1 - 4

• 1, -3, -7

• 9, 13, 17

• 1, 5, 9

• 1, -2, -5

• 11, 14, 17

• 5, 2, -1

• 8, 11, 14

• 10, 13, 16