Kelly met Jesse and Liza at the max for breakfast. The graph shows Kelly’s speed during her 12 minute drive

D.

Step-by-step explanation:

Physically speaking, average acceleration (), measured in kilometers per square hour, is defined by following formula:

(1)

Where:

, - Initial and final speed, measured in kilometers per hour.

, - Initial and final instant, measured in hours.

The initial and final instants are, respectively:

If we know that , , and , then the average acceleration of Kelly is:

The correct answer is D.

answer: the proof is mentioned below.

step-by-step explanation:

since, given:   lines bc = ef

prove:   lines ac > ef

          statements                                           reason

1. bc=ef                                           1. given

2. ac= ab+bc                                 2. because b is the point between the  

                                                            line segment ac

3.   ac > bc                                       3. because if a line segment is equal to

                                                          the sum of two line segments then it is

                                                          always greater then each of these

                                                          individual line segments

4. ac > ef                                         4. by equality property.