Water drains from a barrel at a constant rate. The graph and table show how the amount of water in the barrel changes with time.
1 answer:
Answer:
Option C is correct.
Step-by-step explanation:
We have been given the graph
The graph is not of exponential function
Therefore, option A and B are discarded.
Now, We can see the graph is starting from 37
And the difference between Amount of water from the table is 19-22 that is -3
So, the graph is arithmetic
So, applying the formula ; d is common difference here we have d= -3
Therefore, option C is correct.
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Answer:
The value of S(50) is 22 in means the amount of sodium iodine in the mixture is 22 when 50 milliliters of the 20% solution used.
Step-by-step explanation:
It is given that a chemist working on a flu vaccine needs to mix a 20% sodium-iodine with a 60% sodium-iodine to obtain a 70-milliliter mixture.
Let x be the number of milliliters of the 20% sodium-iodine.
Number of milliliters of the 60% sodium-iodine = 70-x
The amount of sodium iodine in the mixture is 20% of x and 60% of (70-x).
Therefore,the required function is .
Substitute x=50 in the above equation.
The value of S(50) is 22 in means the amount of sodium iodine in the mixture is 22 when 50 milliliters of the 20% solution used.