Arithmetic Sequences Answers

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Which of these sequences are arithmetic? Check all that apply.

–5, –3, 3, 13, 27, .

Option

7, 14, 28, 56, 112, . . .

27, 40, 53, 66, 79, . . .

1, 2, 4, 8, . . .

How is the slope of the line related to the arithmetic sequence?

It is the first term.

It is the common difference.

It is the last term

What is the explicit formula for the arithmetic sequence?

an = 1.2 + (n – 1)1.5

an = 1.5 + (n – 1)1.2

an = 1.5 + (n – 1)3.9

an = 3.9 + (n – 1)1.5

The common difference of the arithmetic sequence is

1/6

1/3

1/2

2/3

What rule can be used to find the next term of the sequence?

an = an–1 – 79

an = an–1 – 13

an = an–1 + 13

an = an–1 + 79

What is the explicit rule that describes the arithmetic sequence shown in the graph?

an = 50 + (n – 1)150

an = 50 + (n + 1)150

an = 150 + (n – 1)50

an = 150 + (n + 1)50

Use the explicit formula to find a1.a1 =

3.9

1.5

1.2

What is the explicit rule for the arithmetic sequence?

Option

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