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Which function is positive for the entire interval [-3, -2]?

Which function is positive for the entire interval [-3, -2]?-example-1
User Sukhwinder
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2 Answers

21 votes
21 votes

Answer:

A function that is positive in the entire interval [-3, -2] is -x2 - 5x - 5.

20 votes
20 votes

Answer:

The second function (second graph and choice)

Explanation:

If you look at the second function you will see that within the closed interval [-3,-2] the graph y values are positive

First choice is incorrect since at x = -2 the y value is negative

Third choice incorrect since at x = -2, y value is negative

Fourth choice incorrect since y value is negative for x = -2

User Vasis
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