The Second one: The area of a triangle.
The third one: Is the number positive o negative?
Achieve personal growth (Have the willingness of personal growth, of being better every time R//Give the best of me, studying the most and being modest, but knowing who is good for me and who not. Also showing myself that I can do what I have proposed and won´t give up at the first time, because all is a process to achieve, and that mistakes I have made the first time give me an lesson.