Which expression shows the distance you would drive from the gym to the office along this road?
a.|-6 + 4|
b.|-6|+|4|
c.-6+4
d.-|6|+|4|

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.