Question

What are the first four terms of an arithmetic sequence if the common difference is 1.5 and the fist term Is 15?

Answer 1

C) 15, 16.5, 18, 19.5

Explanation:

15+1.5=16.5

16.5+1.5=18

18+1.5=19.5

Answer 2

15 - 1.5 = 13.5
13.5 - 1.5 = 12
12 - 1.5 = 10.5
10.5 - 1.5 = 9

10.5 is your fourth term

hope this helps