What should i start off with to start my problem?

Which equation represents the function on the graph?

Ty received 3/5 of his cds as gifts. if he has 60 cds, how many were gifts. explain:

To keep cylindrical tanks from tipping over, a designer is planning to enlarge the original area of the base by 50%. the new tank should have the same volume as the original. how should the designer change the height of the tank? a: make it 50% taller than the height of the original tank. b: make it 6623% taller than the height of the original tank c: make it 3313% shorter than the height of the original tank d: make it 50% shorter than the height of the original tank.