Function Notation 13, Functions of Functions

If $f\left(x\right)=2x+1$  

then what is
 $f\left(f\left(1\right)\right)=?$  

If $f\left(x\right)=2x+1$  

then what is
 $f\left(f\left(2\right)\right)=?$  

If $f\left(x\right)=2x+1$  

then what is
 $f\left(f\left(3\right)\right)=?$  

If $f\left(x\right)=2x+1$  

then what is
 $f\left(f\left(4\right)\right)=?$  

If $f\left(x\right)=2x-1$  

then what is
 $f\left(f\left(1\right)\right)=?$  

If $f\left(x\right)=2x-1$  

then what is
 $f\left(f\left(2\right)\right)=?$  

If $f\left(x\right)=2x-1$  

then what is
 $f\left(f\left(3\right)\right)=?$  

If $f\left(x\right)=2x-1$  

then what is
 $f\left(f\left(4\right)\right)=?$  

If $f\left(x\right)=3x-2$  

then what is
 $f\left(f\left(1\right)\right)=?$  

If $f\left(x\right)=3x-2$

then what is
 $f\left(f\left(2\right)\right)=?$