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

Answer:

C. 4

Step-by-step explanation:

T₁ = -3

T₁₅ = 53

d = (53 - (-3)) / (15 - 1)

  = 56 / 14

  = 4 (use calculator)