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The range of which function includes -4? Download png

Curtis Rhodes

in Mathematics

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William Cain on March 23, 2018

Start with the last two options.You have x + 5 and x - 5 in the square root.A square root can never be negative.That means that the lowest value, and can be in the last two options is 0.The interval does not include -4.Now look at option B. sqrt(x) is at least 0.Then you add 5.The interval does not include -4.Now look at option A. sqrt(x) is at least 0.Now you subtract 5.The lowest value, and can be is -5. Including -4.Option a is the answer.and it will be at least 5.


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