Answer:
[tex]\boxed 2[/tex]
Step-by-step explanation:
Solve the equation when [tex]f = 1[/tex]:
[tex]4 - 2f[/tex]
-Plug in the value of [tex]f[/tex] onto the equation and solve:
[tex]4 - 2f[/tex]
[tex]4 - 2(1)[/tex]
[tex]4 - 2[/tex]
[tex]\boxed 2[/tex]
So, the answer is [tex]2[/tex].
