Della recently quit her 20-year smoking habit. how long will it take for her risk of cardiovascular disease to become the same as a person who has never smoked

It will take 15 years for Della to be in the same risk of non-smoking persons in risk of cardiovascular disease. As you quit smoking, the lungs will start to purify itself, but it will take some time. On the other hand, it cannot be assured that the lungs may be totally restored, more or less it would just be clean over a period of time.

a axis of a graph is a color or shade so we can all go outside and have a party so we can eat   some grilled cheese sammiches and broccoli and have some ugly fun times

i don't know why i put this, i know its not the i was just bored : p

delete this answer while you can

im back lol i heard you where asking for me