Answer:-
★ Input of the given function F(x) is 5.
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• Given:-
✯ F(x) = 7x - 9
✯ Output = 26
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• Solution:-
According to the question the output is 26.
Hence, the above data can be written in an equation form.
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➪ F(x) = 7x - 9 = 26
➪ 7x = 26 + 9
➪ 7x = 35
➪ [tex]\sf x = \dfrac{35}{7}[/tex]
➪ [tex]\bold\red{x = 5}[/tex]
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Therefore, F(x) = 5
