100 points
which statements are correct interpretations of this graph?
select each correct answer. (multiple choice)

a. 0.75 boxes are filled per minute.

b. 1.3 boxes are filled per minute.

c. 4 boxes are filled every 3 min.

d. 3 boxes are filled every 4 min.

For the answers A and B, we have to calculate the slope of this line.
Given two points (x₁,y₁) and (x₂,y₂), the slope of the line that passes through these points will be:
m=(y₂-y₁)/(x₂-x₁)

We can see two points clearly in this line:
(4,3)
(12,9)
if we compute the slope of the line that passes through these points,we  find the next value for the slope:
m=(9-3)/(12-4)=6/8=3/4=0.75

Therefore, the answer A will be the correct answer;

For the answers C and D, you have to do the next question;

What do it mean a slope with a value 3/4??
slope=3/4=3 boxes/4 minutes.

It means that 3 boxes are filed every 4 minutes.

Therefore, the answer D will be correct too. 

A and D are the correct answers.

The correct answer is 7