According to the tentative outline given as an example in this Lesson, what major point and subpoint does this note correspond with?

I A
III A
I B
II B
III B
II A

The cost varies directly with the number of tickets purchased. it costs $145 for 10 people to attend a concert. a. what is the constant of proportionality (k)? b. write the direct variation equation. c. home much does it cost for 8 people? d. graph this situation. be sure to label each axis and give the graph a title.