Determine whether the sequence is arithmetic or geometric.

sequence 1: 32, 16, 0, –16,
sequence 2: 32, 16, 8, 4,

Sequence 1: 32, 16, 0, –16, ...
We notice that 16-32 = -16 & 0-16 = -16 & -16 -(0) = -16
Hence since the common difference is d= - 16, then it's an arithmetic progression

Sequence 2: 32, 16, 8, 4, ...
We notice that  16/32 = 1/2 & 8/16 = 1/2 & 4/8 = 1/2
Hence since the common difference is r= 1/2, then it's a geometric progression

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