Complete the following tasks for this equation: = -2.15. Give an estimate for the solution. Be sure to explain how you arrived at the estimate, either by showing an equation or in words.
Solve the equation. Show or explain your work.
Compared to your estimate, is your answer reasonable? Explain your answer in complete sentences

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.