which function has the same range as $f(x)=-2sqrt{x - 3}+8$?\n$g(x)=sqrt{x - 3}-8$\n$g(x)=sqrt{x…

which function has the same range as $f(x)=-2sqrt{x - 3}+8$?\n$g(x)=sqrt{x - 3}-8$\n$g(x)=sqrt{x - 3}+8$\n$g(x)=-sqrt{x + 3}+8$\n$g(x)=-sqrt{x - 3}-8$
Answer
Answer:
C. $g(x)=-\sqrt{x + 3}+8$
Explanation:
Step1: Analyze the range of $f(x)$
For $y = f(x)=-2\sqrt{x - 3}+8$, since $\sqrt{x - 3}\geq0$, then $-2\sqrt{x - 3}\leq0$, and $y=-2\sqrt{x - 3}+8\leq8$.
Step2: Analyze option A
For $g(x)=\sqrt{x - 3}-8$, as $\sqrt{x - 3}\geq0$, $g(x)=\sqrt{x - 3}-8\geq - 8$.
Step3: Analyze option B
For $g(x)=\sqrt{x - 3}+8$, since $\sqrt{x - 3}\geq0$, $g(x)=\sqrt{x - 3}+8\geq8$.
Step4: Analyze option C
For $g(x)=-\sqrt{x + 3}+8$, because $\sqrt{x + 3}\geq0$, then $-\sqrt{x + 3}\leq0$, and $g(x)=-\sqrt{x + 3}+8\leq8$, which has the same range as $f(x)$.
Step5: Analyze option D
For $g(x)=-\sqrt{x - 3}-8$, as $\sqrt{x - 3}\geq0$, $-\sqrt{x - 3}\leq0$, and $g(x)=-\sqrt{x - 3}-8\leq - 8$.