Answer:
1
Step-by-step explanation:
We have the function
[tex]f(x) = 2x - 4[/tex]
and we want to know the value of [tex]f(3) - 1[/tex].
The first step is to find [tex]f(3)[/tex] ; we can subtract 1 from it at the end! But what does [tex]f(3)[/tex] mean?
Basically, we're saying "what is the value of the function when [tex]x = 3[/tex] ?"
So, we simply replace [tex]x[/tex] with 3 in the function, and we get:
[tex]f(3) = 2\times 3 - 4 = 2[/tex].
Finally, we subtract 1 to find [tex]f(3) - 1 = 1[/tex].
