Answer:
, 
Explanation:
The total water level lost due to evaporation is directly proportional to the number of day. That is:
Where 
is the proportionality constant, which is equal to 
. The expression is:
And the total change in water level after 30 days is:
i would answer this question but there are no answer chooses.
I just took the quiz. The answer is C. the creation of the Soviet Union
Radar images might help to reduce damage from and approaching storm because it help people get ready for an oncoming storm before it causes very much damage. It can also help people get supplies needed to survive in an oncoming storm. If the oncoming storm is hurricane/ tornado like storm it help people and warn them to get to their safe spots for the oncoming storm.
So with the first number in each set, look on the x axis or the horizontal line for the number. For example, 2 1/2 on the horizontal line or x axis is on the right side, next to the two and the x. The second number is on the vertical side, and the same thing. In this case, -1 1/2 would be on the bottom in between the -1 and the arrow.
Now find the place where the two intersect on the coordinate plane, and put a dot there to mark the coordinate.
