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 Interactive Checkpoint
 Sequence:  A pattern involving an ordered arrangement of numbers, geometric figures, letters, or other objects.

Determine if the following sequences are arithmetic, geometric, or neither.

 Choose each answer from the menus.

Graded Response 
 a) 1, 5, 9, 13, ...
a)
 b) 3, 4, 7, 11, ...
b)
 c) -2, 6, -18, 54, ...
c)
 d) 5, 2, -1, -4, ...
d)
 e) 1/8, 1/2, 2, 8, ...
e)

Determine whether the following sequence (the number of dots in each triangular array) is arithmetic, geometric, or neither.

f)