Problem

\[
T(h)=45-1.25 h
\]

Complete the following statements.
Let $T^{-1}$ be the inverse function of $T$.
Take $x$ to be an output of the function $I$.
That is, $x=T(h)$ and $h=T^{-1}(x)$.
(a) Which statement best describes $T^{-1}(x)$ ?
The height above the surface (in kilometers) when the temperature is $x$ degrees Celsius.
The reciprocal of the temperature (in degrees Celsius) at a height of $x$ kilometers.
The temperature (in degrees celsius) at a height of $x$ kilometers.
The ratio of the temperature (in degrees celsius) to the number of kilometers, $x$.
(b) $T^{-1}(x)=\square$
(c) $I^{-1}(29)=\square$
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Answer

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Answer

The function \(I\) is not defined in the problem, so we cannot find \(I^{-1}(29)\).

Steps

Step 1 :\(T^{-1}(x)\) is the height above the surface (in kilometers) when the temperature is \(x\) degrees Celsius.

Step 2 :Set \(T(h) = x\) to find \(T^{-1}(x)\), so \(x = 45 - 1.25h\).

Step 3 :Rearrange the equation to solve for \(h\): \(1.25h = 45 - x\).

Step 4 :Solve for \(h\) to get \(T^{-1}(x)\): \(h = \frac{45 - x}{1.25}\).

Step 5 :\(\boxed{T^{-1}(x) = \frac{45 - x}{1.25}}\)

Step 6 :The function \(I\) is not defined in the problem, so we cannot find \(I^{-1}(29)\).

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