Algebra Ch. 3 - Section 4 Review

Is the sequence arithmetic: -3, 3, -3, 3, ...

• Yes
• No

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

• Yes
• No

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

• d = -5
• d = 5
• d = -6
• d = 6

Find the common difference: 29, 21, 13, 5, ...

• d = -10
• d = -9
• d = -8
• d = -7

Find the next three terms in the arithmetic sequence: -33, -24, -15, -6, ...

• -1, 7, 15
• -5, 2, 9
• 3, 12, 21
• -65, -73, -81

Select the explicit rule that represents the sequence.

• a_n = 6 + 5(n - 1)

• a_n = 4 + 6(n - 1)

• a_n = 6 - 4(n - 1)

Given the sequence:

25, 21, 17, 13,...

Write the explicit equation that models the sequence.

• a_n = 25 + (n-1)4

• a_n = 29 + (n-1)(-4)

• a_n = 25 +(n-1)(-4)

• a_n = 29 +(n-1)(4)

Create the explicit formula for the sequence:

2, 8, 14, ...

• y=2+6x

• y=-6+6x

• y=6x-4

• y=4-6x

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

Find the 20th term in the arithmetic sequence: 5, 12, 19, 26...

• 145

• 144

• 142

• 138