Which of the following situations form a proportional relationship?
Select all that apply.
O 5 DVDs for $9 and 15 DVDs for $27
O 6 cups of coffee for $8 and 9 cups of coffee for $12
3 pocketbooks for $60 and 5 pocketbooks for $90
12 cans for $3 and 30 cans for $7.50
2 ink cartridges for $25 and 4 ink cartridges for $75

Which option identifies how kevin should proceed in the following scenario? four years ago kevin designed an mp3 player for young children. now that technology has changed, he would like to update his design to ensure that it encompasses cutting-edge techniques. by creating a third-angle projection of his ideas by designing an isometric projection of his new ideas by referring to past designs and illustrations of his original model by conferring with engineers who have improved upon similar devices