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Musya8 [376]
2 years ago
7

ANSWER CORRECTLY=BRAINLIEST

Mathematics
1 answer:
Varvara68 [4.7K]2 years ago
3 0

Answer:

{ \tt{f(x) = 69 - 15x}}

• let's find the inverse function:

{ \tt{ m = 69 - 15x }} \\  \\ { \tt{15x = 69 - m}} \\  \\ { \tt{x =  \frac{69 - m}{15} }} \\  \\ { \boxed{ \tt{f {}^{  - 1}(x) =  \frac{69 - x}{15}  }}} \\

• finally, let's find the function of the inverse function:

{ \tt{f( {f}^{ - 1}(x)) =69 - 15( \frac{69 - x}{15} )  }} \\  \\ { \tt{f( {f}^{ - 1}(x)) = 69 - (69 - x)}} \\  \\{ \boxed{  \boxed { \tt{ \: f( {f}^{ - 1}(x)) = x \: }}}}

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