Respuesta :
- f(x)=2x+1
[tex]\\ \bull\tt\looparrowright f(a)[/tex]
[tex]\\ \bull\tt\looparrowright 2(a)+1[/tex]
[tex]\\ \bull\tt\looparrowright 2a+1[/tex]
[tex]\\ \bull\tt\looparrowright f(a)[/tex]
[tex]\\ \bull\tt\looparrowright 2(a)+1[/tex]
[tex]\\ \bull\tt\looparrowright 2a+1[/tex]