Identify a common reason teens report they start using alcohol

peer pressure

Explanation:

many many teens say they started drinking alcohol because they went to a party and their friends dared and told them to drink it causing addiction to the alcohol

A main reason as to why teens report they start using alcohol is knowing that other people are trying alcohol and seeing them enjoy it. Social media encourages others to try it making others imagine it's something cool and healthy to do. As well as seeing other groups trying it causes peer pressure to occur.

a, b, c - sides of a triangle

a + b > c

a + c > b

b + c > a

we have a = 5m and b = 11m. substitute:

5 + 11 > c

16 > c → c < 16

5 + c > 11         subtract 5 from both sides

c > 6

11 + c > 5         subtract 11 from both sides

c > -6

c < 16 and c > 6 and c > -6

thereofre your answer is 6m < c < 16m