A bottle of cough syrup has 300 mL. If you take 5-mL
spoonfuls 3 times a day, how
many days will the cough syrup
last?

20 days?

Step-by-step explanation:

3 times a day is 15 and 300 ÷ 15 = 20

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.