Arithmetic Sequence Model

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

Write the formula for the following sequence 
3,8,13,18...

• 5+3(n-1)

• 3+5(n-1)

An arithmetic sequence is shown below. Which explicit formula can be used to determine the nth term of the sequence?

• a_n = -4n + 5

• a_n = -4n + 9

• a_n = -5n + 1

• a_n = -5n + 9

A sequence is shown below.

32, 26, 20, 14, ...

Which explicit formula can be used to determine the nth term of the sequence?

• a_n = -6n + 38

• a_n = 6n + 32

• a_n = 6n + 38

• a_n = -6n + 32

The 5th, 6th, and 7th terms of an arithmetic sequence are shown below.

-10, -7, -4, ...

Which is an explicit formula for this sequence?

• f(n) = -3n - 19

• f(n) = -3n - 25

• f(n) = 3n - 25

• f(n) = 3n - 19

An arithmetic sequence has these properties: a₁ = 2 a_n = a_(n-1) + 5 What are the first four terms of the sequence?

• 2, 5, 10, 15

• 2, 5, 7, 12

• 2, 7, 9, 14

• 2, 7, 12, 17

The sequence below shows the number of raffle tickets that Samantha sold each day during a month:

3, 7, 11, 15, ...

Which explicit formula models the number of tickets Samantha sold on day x?

• t(x) = 4x - 1

• t(x) = x + 4

• t(x) = 4x + 3

• t(x) = 3x + 4

The first four terms of a sequence are shown below. -10, -14, -18, -22, ... Which explicit formula can be used to determine the nth term in the sequence?

• a_n = n - 10

• a_n = -4n - 14

• a_n = -4n - 6

• a_n = n - 4

A sequence is shown below. -20, -17, -14, -11, -8, ... Which explicit equation can be used to determine the value of the nth term in the sequence?

• a_n = n + 3

• a_n = 3n + 23

• a_n = n - 23

• a_n = 3n - 23