A very slow man walks 20 cm.in 0.5 left, what his velocity in meter per second?
1 answer:
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Answer:
Option "B" as per the list of possible answers
Step-by-step explanation:
Notice that the parabola has a minimum at the point (2, 1), therefore first look at which of the options gives you . You would be able then the discard the last two functions listed (they render "-1" (not 1) for x = 2.
Now to decide between the first and the second option, notice that the first option has a negative coefficient (-0.2) multiplying the perfect square which means that the branches of such parabolic function would be pointing down. So you discard the first option, and now the only one left is the second option:
which you can check briefly by evaluating a couple of easy points (like what values you get for x = 0, and at x = 4, and confirm it is the correct option.
Answer:
The correct option is B.
Step-by-step explanation:
A function is called an exponential function if it has common ratio.
A function is called an linear function if it has common difference.
In option A.
Since the given table has different ratio, therefore it is not an exponential function. Option A is incorrect.
In option B.
Since the given table has common ratio, therefore it is an exponential function. Option B is correct.
In option C.
Since the given table has different ratio, therefore it is not an exponential function. Option C is incorrect.
In option D.
Since the given table has different ratio, therefore it is not an exponential function. Option D is incorrect.