Respuesta :

Answer:

Explanation:

x

=

6

Set  

4

x

5

=

19

and solve for  

x

.

4

x

5

=

19

4

x

=

19

+

5

4

x

=

24

x

=

24

4

x

=

6

Then,  

f

(

6

)

=

19

.

Answer:

75

Explanation:

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