Arithmetic Sequence Bellringer

What is the common difference of the arithmetic sequence 18,24,30,36, ...?

If the third term of an arithmetic sequence is 13 and the 9th term is 37, what is the common difference?

If the third term of an arithmetic sequence is 13 and the 9th term is 37, what is the first term?

If the third term of an arithmetic sequence is 13 and the 9th term is 37, what is the 53rd term?

The first three terms and the last term of a finite arithmetic sequence are - 92, - 88, - 84, ...,12.Find the number of terms in the sequence.

• 20

• 25

• 27

• 30

How many terms are there in the sequence 1, 4, 7, 10, ..., 682?

• 228

• 268

• 248

• 238

Find the next three terms in the arithmetic sequence: -3, -8, -13, -18, ...

• -20, -24, -28

• -21, -25, -29

• -23, -28, -33

• -24, -29, -32

Find the next three terms in the arithmetic sequence: 9, 19, 29, 39, ...

• 45, 54, 63

• 49, 59, 69

• 39, 49, 59

• 59, 69, 79

Find the next three terms in the arithmetic sequence: 25, 34, 43, 52, ...

• 63, 72, 81

• 79, 88, 97

• 70, 79, 88

• 61, 70, 79

Given the sequence:
 25, 21, 17, 13,...
Write the explicit equation that models the sequence.  (Hint:  Simplify your equation.)

• a_n = 4n + 29

• a_n = -4n + 25

• a_n = -4n + 29

• a_n = 4n + 25