Evaluate: 3 - 4 - 4 - (-2)

Pelle's sister is three years older than pelle the father is 5 times as old as pelle the mother was 28 when the sister was born altogether they are 98 years old how old is pelle?

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

This question awards 100 ! i really don’t want to fail i will also mark you !