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The function f is defined by \(f(x)=\sqrt{x}-10\) for all positive numbers x. If u=f(t) for some positive numbers t and u, what is t in terms of u?
A. \(\sqrt{\sqrt{u}+10}\)
B. \((\sqrt{u}+10)^2\)
C. \(\sqrt{u^2+10}\)
D. \((u+10)^2\)
E. \((u^2+10)^2\)
OA D
The function f is defined by \(f(x)=\sqrt{x}-10\) for all positive numbers x. If u=f(t) for some positive numbers t and u, what is t in terms of u?
A. \(\sqrt{\sqrt{u}+10}\)
B. \((\sqrt{u}+10)^2\)
C. \(\sqrt{u^2+10}\)
D. \((u+10)^2\)
E. \((u^2+10)^2\)
OA D
