The graph below shows a line of best fit for data collected on the number of flower arrangements remaining in storage at a florist's in relation to the day of the month.

The equation of the line of best fit is shown below.

What does the y-intercept represent?

A.

the number of arrangements left in storage at the end of the month

B.

the number of arrangements sold per day

C.

the number of arrangements in storage before the beginning of the month

D.

the number of arrangements created during the month

Which of the following would be a correct step in proving that triangle abc is congruent to triangle cda? a. use a protractor to measure the angles and show that all the corresponding angles are equal in measure. this will allow you to prove congruence by aaa. b. show that segment ab is parallel to segment cd and segment ad is parallel to segment cb. this will allow you to prove congruency by asa. c. show that is segment ab is perpendicular to segment ad. this will allow you to prove congruence by sas. d. none of the above.