Functions

$f(x)=3x+7$

Find the value of:

1. $f(2)$
2. $f(3)$
3. $f(5)$
4. $f(10)$

$f(2)=7$

5. Which of the following could be f(x)?
   1. $f(x)=x+2$
   2. $f(x)=x^2-1$
   3. $f(x)=3x-1$
   4. $f(x)=x^2-2$
   5. $f(x)=x^3-1$

$f(x)=2x-4$

$g(x)=\dfrac{x}{2}+3$

Find the value of:

6. $f(4)$
7. $g(3)$
8. $f(g(2))$
9. $g(f(1))$
10. $f(g(f(2)))$