Functions

[Llamasmith]

I don’t understand why the answer is -5. How do you work it out step by step?

 

[pka]

[imath]g(x)=3\cdot f(x)-2[/imath]
[imath]f(2)=-1[/imath]
[imath]g(2)=3\cdot f(2)-2[/imath]

 

[Llamasmith]

Thanks!