Question

The first term of an arithmetic sequence is -3 and the fifteenth term is 53. What is the common difference of the sequence?

A.) 14/13
B.) 25/7
C.) 4

Answer 1

C

Explanation:

the 15th term = a + 14d

it means a + 14d = 53

-3 + 14d = 53

14d = 56

d = 4