Answer:

Step-by-step explanation:
Data provided in the question:
Initial volume of water = 15 liters
Concentration of salt = 4 liters per minute
x be the amount of salt, in grams, in the fish tank after t minutes have elapsed
The unknown concentration of incoming brine c.
Now,
Salt concentration per minute = 
For x amount of salt = 
Therefore,

Magic is the answer
please revise your incomplete question next time before you post it
If the graph is a straight line, then it is linear. And If the y values is the same. The power of each, x and y in the equation is one.
Poke holes in some vegetables and put it on a string
Answer: Ricardo y yo somos