Answer:

Step-by-step explanation:
From the given information:
The diagrammatic interpretation of what the question is all about can be seen in the diagram attached below.
Now, let V(x) be the time needed for the runner to reach the buoy;
∴ We can say that,

In order to estimate the point along the shore, x meters from B, the runner should stop running and start swimming if he want to reach the buoy in the least time possible, then we need to differentiate the function of V(x) and relate it to zero.
i.e
The differential of V(x) = V'(x) =0
=





squaring both sides; we get


By cross multiplying; we get










C) X is greater than or equal to 0
(Domain is all the x-values the line goes through)
Answer:
If $300 is 200%, half of that would be 100%. Thus, $150 is the correct answer.
Step-by-step explanation:
10 and -7 times each other equals -70.
10 plus -7 equals 3.
Hope this helps you! (: