Arithmetic Sequence Explicit

Which explicit formula can be used to model the sequence?

• a_n = -1 + 3(n)

• a_n = 2 + 2(n)

• a_n = 3 - 11(n)

• a_n = 2 - 3(n)

Tags

CCSS.HSF.BF.A.2

Is the sequence arithmetic: 17, 9, 1, -7, ...

• Yes

• No

Tags

CCSS.HSF.BF.A.2

Find the common difference: -34, -29, -24, -19, ...

• d = -5

• d = 5

• d = -6

• d = 6

Tags

CCSS.HSF.BF.A.2

• 2, 5, 7, 12

• 2, 7, 9, 14

• 2, 5, 10, 15

• 2, 7, 12, 17

Tags

CCSS.HSF.BF.A.2

Which sequence(s) represent an arithmetic sequence?

• a and e

• a, b, and e

• b, c, and d

• b

Tags

CCSS.HSF.BF.A.2

Write the explicit rule for this situation.

• f(n) = 35 + 3(n − 1)

• f(n) = 35 −3(n − 1)

• f(n) = 3 + 35(n − 1)

• f(n) = −3 + 35(n − 1)

The explicit rule for arithmetic sequence is a_n = a₁ + d(n − 1), what does the d represent.

• common denominator

• common difference

• common divider

• uncommon difference

Tags

CCSS.HSF.BF.A.2

Using this explicit rule a_{n = 2n + 5, write the first four terms in the sequence.}

• 7, 9, 11, 13

• 5, 7, 9, 11

• 7, 5, 3, 1

• 5, 3, 1, −1

Tags

CCSS.HSF.BF.A.2

Is this an arithmetic sequence?

• yes

• maybe

• sometimes

• no

Tags

CCSS.HSF.BF.A.2

Write the recursive rule for this situation.

• f(n) = f(n − 1) + 58, n ≥ 2

• f(n) = 58 + 7(n − 1)

• f(n) = 58 − 7(n − 1)

• f(n) = f(n − 1) + 7, n ≥ 2

Tags

CCSS.HSF.IF.A.3