Question

If f(x)=2x-4, what would be the answer if f(3)-1??

Answer 1

Answer:

1

Step-by-step explanation:

We have the function

$f(x) = 2x - 4$

and we want to know the value of $f(3) - 1$.

The first step is to find $f(3)$ ; we can subtract 1 from it at the end! But what does $f(3)$ mean?

Basically, we're saying "what is the value of the function when $x = 3$ ?"

So, we simply replace $x$ with 3 in the function, and we get:

$f(3) = 2\times 3 - 4 = 2$.

Finally, we subtract 1 to find $f(3) - 1 = 1$.