Assuming that each candle costs the same amount, we divide total cost by the amount of the candles bought. $36/12 candles. Your final answer would be $3 per candle.
For y to not be a function of x, there needs to be an x-value that is paired with more than one y-value.
In terms of the sets, you need to find a set where the same x-value is used more than once in two (or more) different (x,y) pairs.
This occurs in the third set, where x=6 is used twice.
The easiest way is to plug x=-4, y=-1 in the equation to see which one works.
8(-4)-9(-1)=-23
B is correct.
Answer:
20 barriles diarios y en los trajes y que es el que
