A Common What of What?
The sequence 1, 2, 3, 4, 5, has a common _______ of _____.
(Difference, d = __ OR ratio, r = __)
Difference, d = 1
Fill in the blank: 1, 2, 3, 4, 5, ____
6
A sequence where you are adding or subtracting by the same number to get from one term to the next is called ______________________
(Arithmetic or geometric)
An arithmetic sequence
The sequence 2, 4, 8, 16, 32 has a common ______ of _____.
(Difference, d = __ OR ratio, r = __)
Ratio, r = 2
Fill in the blank: 10, 6, 2, -2, -6, ____
-10
A sequence where you are multiplying or dividing by the same number to get from one term to the next is called ______________________
(Arithmetic or geometric)
A geometric sequence
The sequence 100, 90, 80, 70, 60 has a common _____ of _____.
(Difference, d = __ OR ratio, r = __)
Difference, d = -10
Fill in the blank: 400, 200, 100, 50, ___
25
What "a1" represents in the explicit formula for an arithmetic sequence
The first term of the sequence
The sequence 2, 2.5, 3, 3.5, 4 has a common ______ of _____.
(Difference, d = __ OR ratio, r = __)
Difference, d = 0.5
-96
What the variable "n" represents in the formulas for arithmetic and geometric sequences
The term you are trying to find (the "nth" term)
The sequence -32, 16, -8, 4, -2 has a common ____ of ____.
(Difference, d = __ OR ratio, r = __)
Ratio, r = -1/2
Fill in the blank: 2816, 704, 176, 44, ____
11
The name of the formula where you need the previous term and the common difference/ratio
(Recursive or explicit)
The recursive formula