I need the values of A and B

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 area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?

Which graph represents the same relation is the sa which graph represents the same relation as the set {(-3-2)}