Which property is this?

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line

What is the measure of sty in oo below? 130 310 230 50

What is the distance from zero if a quadratic function has a line of symmetry at x=-3 and a zero at 4