Ineed answer quick! prove triangle

See proof below.

Step-by-step explanation:

Statements                                      Reasons

1. Line AB is parallel to line CD       1. Given

2. <A is congruent to <ECD            2. If parallel lines are cut by a

                                                             transversal, then corresponding

                                                             angles are congruent.

3.  <B is congruent to <EDC            3. If parallel lines are cut by a

                                                             transversal, then corresponding

                                                             angles are congruent.

4. Tri. AEB is congr. to tri. CED      4. If two angles of a triangle are

                                                            congruent to to angles of another

                                                            triangle, then the triangles are

                                                            similar.

$865.20

Step-by-step explanation:

Use the equation: A = P(1 + rt)

A = 840(1 + (0.03 × 1)) = 865.2

A = $865.20