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f(x)=-2+ square root x+7 find domain and range

a. The domain is x≥−7 , and the range is f(x)≥−2 .
 b. The domain is x≥7 , and the range is f(x)≥−2 .
 c. The domain is x≥−7 , and the range is all real numbers.
 d. The domain is x≥−7 , and the range is f(x)≥2 .

Respuesta :

Benjamin16
[tex]f(x)= \sqrt{x+7}-2 \\ \\ D: x+7 \geq 0 \\ \\ x \geq -7 \\ \\ f(-7)= \sqrt{-7+7} -2 = 0-2=-2 \\ \\ f\in R: f\geq -2[/tex]

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