Given m=-1m=−1, evaluate the expression 7m+4-m7m+4−m

-5

Step-by-step explanation:

m= -1

7(-1)+4-(-1)(7)(-1)+4-(-1)

-7+-3+5

=-5

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.