u5

What is the common difference:
-6, -1, 4, 9...

• 5
• -5
• -6
• 1/5

What kind of sequence is the pattern 32, 38, 44, 50, 56, ...?

• arithmetic
• geometric
• neither

Find the common ratio of the geometric sequence:      -2, -4, -8, -16, . . . 

• -2
• 2
• 4
• -4

Is this sequence arithmetic, geometric, or neither:
3, 6, 12, 24, ...

• arithmetic
• geometric
• neither

Which sequence is arithmetic?

• 4, 8, 16, 32, 64, ...
• 4, 6, 10, 12, 16, ...
• 4, 1, -2, -5, -8, ...
• 4, 2, 1, 1/2, 1/4, ...

What is the explicit rule for the sequence:
11, 22, 44, 88...

• a_n = 2(11)^n-1
• a_n = 11x2
• a_n = 11(2)^n-1

Given the sequence:
 25, 21, 17, 13,...
Write the explicit equation that models the sequence.

• a_n = 4n + 29
• a_n = -4n + 25
• a_n = -4n + 29
• a_n = 4n + 25

Write the explicit formula for the sequence given by 3, 6, 12, 24, …

• ^a_n= 3(2)^n-1

• ^a_n= 3+(2)ⁿ

• ^a_n= 3(2)ⁿ

• ^a_n= 3+(2)^n-1

Write the explicit formula for the geometric sequence.

• a_n = 10(2)^n-1

• a_n = 2(10)^n-1

• a_n = 10(2)ⁿ

• a_n = 2(10)ⁿ

A holiday meal costs $12.50 a person plus a delivery fee of $30.  Which equation represents the amount a holiday meal costs, including delivery, for x people?

• y = 30 + 12.5x 
• y = 12.5 + 30
• y = 12.5 + 30x