B) What is the total amount, including interest, that the shoe store must pay on the loan? (2 points) c) How could you use estimation to determine if your answer is reasonable? Explain. (2 points)

okay so, there aren't any specific numbers so I'll add my own:

$10 = total amount

$3 = interest rate

= $13

estimate =  $10 because 4 and below go down, 5 and up raise higher

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.