The answer should be 16 square cm.
Answer:
About an hour, 56 mins.
Step-by-step explanation:
18+18=36
36+20=56
Voila!
Level, x 1 0.8 0.65
time, y 0 1 2
The graph is not a straight line, it is curved. You can observe this only if you include the point (1,0), which is the level at the begining (100%)
The y - intercept is the full level, at the beginning of the experiment.