TEST on SEQUENCES and SIGMAS

Front

What is a₁ in the sequence -6, -14, -22, -30, ...?

Back

-6

Front

How do you find the next term in the sequence 10, 20, 30, 40...?

Back

Add 10

Front

What is the 9^th term in the sequence 6, 11, 16, 21...?

Back

46

Front

To find the next term in a geometric sequence, you should...

Back

multiply by the common ratio, r

Front

What kind of sequence is the pattern 15, 17, 20, 24, 29, ...?

Back

Neither

Front

Define an arithmetic sequence.

Back

A sequence in which the difference between consecutive terms is constant.

Front

What is the common difference in the arithmetic sequence 3, 7, 11, 15...?

Back

4

Front

What is a geometric sequence?

Back

A sequence in which each term after the first is found by multiplying the previous term by a fixed, non-zero number called the common ratio.

Front

If the first term of a geometric sequence is 2 and the common ratio is 3, what is the 4^th term?

Back

54

Front

What is the formula for the n^th term of an arithmetic sequence?

Back

a_n = a₁ + (n-1)d, where d is the common difference.