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Explanation:</h2><h2>
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Hello! Remember you have to write complete questions in order to get good and exact answers. I'll help you to understand this problem, but I have to assume some things.
We know that the empty cup in the shape of a cylinder is being filled with water. Suppose the volume of this cylinder is:
Suppose that the cup is filled at a constant rate of 
, so in 7 seconds the cup is filled the following amount:
So this represents the following percentage:
Finally, after 7 seconds the cup is 77.78% filled
I would say A) is your answer.
This is my choice, so I might be wrong.
Glad I could help, and good luck!
As the variation is direct we have:
We must find the value of k.
For this, we use the following data:
y = 200 when x = 5
Substituting values we have:
Clearing k:
Then, the function is:
We evaluate the function for x = -3
Answer:
the value of y when x = -3 is:
c.
72
17 minutes
In order to solve this you make a porportion:
24/12=34/x
You do (34×12)÷24
34×12=408
408÷24=
17
~JZ
Hope IT helps you
