9. Determine whether the sequence appears to be an arithmetic sequence. If so, find the common difference and the next three terms in the sequence.
-5, -11, -17, -23, -29,
a.
Not an arithmetic sequence
b. Yes; common difference –7; next three terms are -36,-43, -50
c. Yes; common difference -6; next 3 terms are -35, 41, 47
d. Yes; common difference 6; next three terms are -23,-17, -11