If sachi, sheryl, sharon, shannon and stephanie are all sitting on the back seat of a school bus , how many different ways can they seat themselves

Two lines that do not intersect are skew. always sometimes or never

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm