Unit 7 Review

Find the a₂₂ for the following sequence: 5, 8, 11, ...

• 14

• 68

• 63

• 71

Identify the common difference.
97, 86, 75, 64, ...

• 8
• 11
• -11
• -8

Write the explicit formula for the sequence.

• a_n = 10(2)^n-1

• a_n = 2(10)^n-1

• a_n = 10(2)ⁿ

• a_n = 2(10)ⁿ

Is this a Geometric Sequence? If so, what is r?

• No

• Yes, r = 1/4

• Yes, r = -1/4

• Yes, r = -4

• 95

• -5

• 5

• -95

Find The sum of the first 14 terms

7, 2, -3, ...

• -812

• 119

• -945

• -357

What is this the recursive formula for the following sequence?

2, -6, 18, -54,

• a_n=a_n-1 · (-3)

• a_n=a_n-1 -3

• a_n = a_n-1 ·3

• a_n=a_n-1 + 3

Find the common difference: -18, -23, -28, -33, ...

• d = -5
• d = 5
• d = -3
• d = 3

What is the sum of the first 10 terms for the following series: 2-6+18-54+...

• 59048

• -29524

• 524288

• 3069

Find a₂₆ for the sequence: -15, -35, -55, -75, ...

• -515

• -490

• -535

• 460