2. After drinking two bottles of beer in a short period of time, people weighing about 70kg measure their blood alcohol content (mg/ 100ml) at regular intervals. The data are as follows:
Time (hour) 0.25 0.50.751.1.522.533.544.55
Alcohol content 30 68 75 82 82 77 68 68 58 5150 41
Time (hours) 67891013141516.
Alcohol content is 38 35 28 2518151210 774.