Determine whether the sequence is arithmetic. If so, find the common difference.
?
?5.3, 5.7, 6.1, 6.5, 6.9, ...
?
A. Arithmetic sequence, d = -0.4
B. Arithmetic sequence, d = -1.6
C. Arithmetic sequence, d = 0.8
D. Arithmetic sequence, d = 0.4
E. Not an arithmetic sequence
Answer: D
Mathematics
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and 
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