Question 647407
Hi, my name is Aaron I am in 10th grade and im in honors trig/pre-calc. 

This is called the triangle inequality thm.

Lets call the third side "X"
that makes the second side 2x-1

These two sides added together, must be greater than the first side, which is 14. lets make an inequality out of it.

x+2x-1>14

solve for x

3x>15
x>5

as long as X is greater than 5, you know the triangles exist.

Hope I helped. I would really appreciate your recommendation, their are plenty of other things I could be doing rather then spending time on this site helping people. Good luck! :)