For this case we have a function of the form [tex]y = f (x)[/tex], where:
[tex]f (x) = (3x + 4) - (2-x)[/tex]
Simplifying, taking into account that [tex]- * + = -[/tex]and [tex]- * - = +[/tex], we have:
[tex]f (x) = 3x + 4-2 + x[/tex]
We add similar terms:
[tex]f (x) = 4x + 2[/tex]
Now we evaluate the function at [tex]x = 5[/tex]:
[tex]f (5) = 4 (5) +2\\f (5) = 20 + 2\\f (5) = 22[/tex]
Answer:
[tex]f (5) = 22[/tex]
