An arithmetic sequence is given. Find the common difference and write out the first four terms.
-{8 - 4n}
A)d = -4; 4, 0, -4, -8
B)d = -4; -4, -8, -12, -16
C)d = 4; 4, 8 , 12 , 16
D)d = -4; 4, 2 , -2 , -6

Question

Quizplus · Accepted Answer

The common difference (d) is -4, as indicated by the "-4n" in the sequence formula. The first term (when n=1) is 8 - 4(1) = 4. Subsequent terms decrease by 4, giving the sequence 4, 0, -4, -8.

An Arithmetic Sequence Is Given