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Answer :

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].