What are the x-intercepts of the graphed function

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

The radius of a sphere is 3 inches. which represents the volume of the sphere?

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect