Why is the product of different from the product of ?

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

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?