What is f(x) sometimes called

Can someone me with this graph problem by the way i need to know the answers by today since this assignment is due ! !

Lisa was trying to park her car. she moved her car forward at a constant velocity for 5 seconds, and then backward at a constant velocity for 10 seconds. she then moved her car forward again at a constant velocity for the next 5 seconds, and then she stopped. which of the following graphs could represent the motion of lisa's car?

The rectangle shown has a perimeter of 44 cm and the given area. its length is 7 more than twice its width. write and solve a system of equations to find the dimensions of the rectangle. the length of the rectangle is __ cm and the width of the rectangle is __ cm