Here's a picture of the graph: http://i.imgur.com/8Lak4.jpg
I'm leaning towards -1, since the slope is downwards, but I have no other reasoning for it.
Anyone with more knowledge of the problem?
I'm leaning towards -1, since the slope is downwards, but I have no other reasoning for it.
Anyone with more knowledge of the problem?
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None of the other answers make sense, and since it's just an estimation, I'd say -1 is the best answer. Your reasoning is correct.
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You are thinking about this correctly.
The slope of the tangent line is negative.
So, the only possibility is -1.
The answer is ... A. -1
The slope of the tangent line is negative.
So, the only possibility is -1.
The answer is ... A. -1