A)14.6
B)14.8
C)15.0
D)15.2

B

Step-by-step explanation: to find the mean you add all of the values and divide it by the number of values you added. so it would be (13+14+14+14+14+14+15+15+15+15+15+15+16+16+17)/15 which equals 14.8

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.