An arithmetic sequence is given. Find the common difference and write out the first four terms.
-{5n + 9}
A) d = 9; 5, 14, 19, 24
B) d = 5; 14, 19, 24, 29
C) d = 9; 14, 19, 24, 29
D) d = 5; 5, 14, 19, 24

Question

Quizplus · Accepted Answer

The common difference (d) is the coefficient of n, which is 5. The first term (when n=1) is 5(1) + 9 = 14. Subsequent terms are found by adding the common difference, so the first four terms are 14, 19, 24, 29.

An Arithmetic Sequence Is Given