1 and 2 are correct.
3.
[tex]f(g(x))=9(-x+3)-2=-9x+27-2=-9x+25[/tex]
4.
[tex]f(-2)=\dfrac{24}{3\cdot(-2)-2}\\
f(-2)=\dfrac{24}{-6-2}\\
f(-2)=\dfrac{24}{-8}\\
f(-2)=-3[/tex]
5.
[tex]f(x)=2x+2\\
y=2x+2\\
2x=y-2\\
x=\dfrac{1}{2}y-1\\
f^{-1}(x)=\dfrac{1}{2}x-1\\\\
f^{-1}(4)=\dfrac{1}{2}\cdot4-1\\
f^{-1}(4)=2-1\\
f^{-1}(4)=1[/tex]
