Find the first term a1 and the common difference d of the arithmetic sequence.0.9, 0.88, 0.86, 0.84, 0.82, . . .
A. a1 = -0.02, d = 0.82
B. a1 = 0.9, d = -0.04
C. a1 = -0.02, d = 0.02
D. a1 = 0.9, d = -0.02
Answer: D
Mathematics
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