Arithmetic Sequences Recursive

Write the recursive formula of 13, 9, 5...

• a_n=a_n-1-4

• a_n=a_n-1+3

• a_n=a_n-1-5

• a_n=a_n-1+4

• -6, -12, -18, -24

• 100, 94, 88, 82

• answer not here

• 100, 106, 112, 118

Given the sequence -5, -15, -25, -35..., which recursive formula describes it?

Given the sequence 11, 15, 19, 23..., which recursive formula describes it?

Given the sequence 30, 40, 50, 60..., which recursive formula describes it?

Recursive formulas are mainly used for providing the ______ and the _____ in an arithmetic sequence.

• first term

  and

  last term

• first term

  and

  common difference

• previous term

  and

  final term

• none of these

Write the recursive rule for the arithmetic sequence
82, 76, 70, 64, ...

• a₁=82; a_n = a_n-1-6

• a₁=64; a_n = a_n-1-6

• a₁=82; a_n = a_n-1+6

• a₁=64; a_n = a_n-1+6

Write the recursive rule for the arithmetic sequence
-49, -35, -21, -7, ...

• a₁=-49; a_n = a_n-1 + 10

• a₁=-7; a_n = a_n-1 + 14

• a₁=-49; a_n = a_n-1 + 14

• a₁= -49; a_n = a_n-1 -14

Identify a₁ and d for the sequence
-5, -2, 1, 4, ...

• a₁ = 3 and d = -5

• a₁ = -8 and d = 3

• a₁ = -5 and d = 3

• a₁ = -5 and d = -3

Find the given term for the sequence.
Find the 30th term of 20, 11, 2, -7, -16, ...

• 29

• -261

• -241

• cannot be determined