Problem

$\begin{array}{l}\text { Let } \\ f(x)=\frac{x+1}{x+9} \\ f^{-1}(-10)=\end{array}$

Answer

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Answer

Therefore, the solution to the equation is \(f^{-1}(-10) = \boxed{-\frac{91}{11}}\).

Steps

Step 1 :Let the function be \(f(x)=\frac{x+1}{x+9}\).

Step 2 :To find the inverse of a function, we need to switch the x and y (or f(x)) values. This means we set x = f(y) and solve for y.

Step 3 :In this case, we need to find the value of x such that \(f(x) = -10\).

Step 4 :Once we have the value of x, we can substitute it into the inverse function to find the value of \(f^{-1}(-10)\).

Step 5 :Solving the equation \(\frac{x + 1}{x + 9} = -10\), we find that x = -\frac{91}{11}.

Step 6 :Therefore, the solution to the equation is \(f^{-1}(-10) = \boxed{-\frac{91}{11}}\).

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