Can somebody help me out with this question? I'm not sure if my answer is correct.

[tex]\boxed{\sf {\displaystyle{\lim_{x\to a}}}f(x)=f(a)}[/tex]
[tex]\\ \sf\longmapsto {\displaystyle{\lim_{x\to 3}}}(4-x)[/tex]
[tex]\\ \sf\longmapsto 4-3[/tex]
[tex]\\ \sf\longmapsto 1[/tex]