Answer: After 8 hours the pressure will be at -60?
Explanation: not sure how the balloon can reach -60 kilopascals but 15% of 300 is 45 and 45 x 8(hours) is 360. 300 - 360 is -60
we have
--------> equation
--------> equation
Multiply equation by both sides
------->
the two equations of the system are the same, both equations represent the same line
so
If a consistent dependent system that has an infinite number of solutions
therefore
<u>the answer is</u>
The system has infinite number of solutions
ZX is a diagonal line from corner to corner.