The three graphs represent the progress of three runners in a 400-meter race.

The solid line represents runner A. The dotted line represents runner B. The dashed line represents runner C.

A graph, origin O. Horizontal axis, time, seconds, scale 0 to 60 by 10s. Vertical axis, distance, meters, scale 0 to 400 by 100s. A solid curve passes through the points 0 comma 0, 15 comma 310, and 42 comma 310 and then curves up and to the right. A dashed line passes through the points 0 comma 0 and 40 comma 400. A dotted curve passes through the points 0 comma 0, 25 comma 290, and 48 comma 400.

1. One runner ran at a constant rate throughout the race. Which one?
2. A second runner stopped running for a while. Which one? During which interval of time did that happen?
3. Describe the third runner's race. Be as specific as possible.
4. Who won the race? Explain how you know.

Function gives the area, in square inches, of a square with side length inches.

1. Complete the table.

   	0	1	2	3	4	5	6

2. Represent function using an equation.

3. Sketch a graph of function .

   

Function is represented by .

1. Find .
2. Find the value of such that is true.

Here is a line . Write equations for and graph 4 different lines perpendicular to  .