What is the common difference between successive terms in the sequence? 9 comma 2 point 5 comma negative 4 comma negative 10 point 5 comma negative 17 comma dots
Answer
A
negative 11 point 5
B
negative 6 point 5
C
11 point 5
D
6 point 5
Explanation
Subtract each term from the next: 2.5 − 9 = −6.5, and −4 − 2.5 = −6.5. The common difference is negative 6.5, which is choice A.
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