What is -28x + 20x^2?
1 answer:
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The solution to this system is (x, y) = (8, -22).
The y-values get closer together by 2 units for each 2-unit increase in x. The difference at x=2 is 6, so we expect the difference in y-values to be zero when we increase x by 6 (from 2 to 8).
You can extend each table after the same pattern.
In table 1, x-values increase by 2 and y-values decrease by 8.
In table 2, x-values increase by 2 and y-values decrease by 6.
The attachment shows the tables extended to x=10. We note that the y-values are the same (-22) for x=8 (as we predicted above). That means the solution is ...
... (x, y) = (8, -22)
The amount of milk left in the bottle is
<u>Explanation:</u>
Let x be the volume of the bottle.
According to the question,
Milk inside the bottle =
AMount of milk poured out =
=
Amount left in the bottle =
Therefore, amount of milk left in the bottle is