$$f\left(x\right)=3^{-x-1}+2$$

$$f\left(x\right)=3^{x-1}+2$$

$$f\left(x\right)=3^{x-1}-2$$

$$f\left(x\right)=3^{-x-1}-2$$

$$f\left(x\right)=4^x+3$$

$$f\left(x\right)=4^{-x}-3$$

$$f\left(x\right)=4^x-3$$

$$f\left(x\right)=4^{-x}+3$$

$$f\left(x\right)=3^{-x}+1$$

$$f\left(x\right)=3^x-1$$

$$f\left(x\right)=3^{-x}-1$$

$$f\left(x\right)=3^x-1$$

$$f\left(x\right)=-x\left(x-2\right)\left(x-4\right)^2$$

$$f\left(x\right)=-x^2\left(x-2\right)\left(x-4\right)$$

$$f\left(x\right)=x\left(x-2\right)^2\left(x-4\right)$$

$$f\left(x\right)=x^2\left(x-2\right)\left(x-4\right)$$

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

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

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

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

$$f\left(x\right)=-\left(x+1\right)^2\left(x+3\right)^2$$

$$f\left(x\right)=\left(x-1\right)^2\left(x-3\right)^2$$

$$f\left(x\right)=\left(x+1\right)^2\left(x+3\right)^2$$

$$f\left(x\right)=-\left(x-1\right)^2\left(x-3\right)^2$$

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

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

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

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

$$f\left(x\right)=-\frac{2}{x+4}-5$$

$$f\left(x\right)=-\frac{2}{x-4}-5$$

$$f\left(x\right)=-\frac{2}{x+5}+4$$

$$f\left(x\right)=\frac{2}{x-4}-5$$

$$f\left(x\right)=-\frac{3}{x}+4$$

$$f\left(x\right)=\frac{3}{x-4}$$

$$f\left(x\right)=\frac{3}{x}+4$$

$$f\left(x\right)=\frac{3}{x}-4$$

$$f\left(x\right)=-\frac{1}{x+2}$$

$$f\left(x\right)=\frac{1}{x+2}$$

$$f\left(x\right)=\frac{1}{x-2}$$

$$f\left(x\right)=-\frac{1}{x}-2$$

$$f\left(x\right)=-\frac{2}{x-1}-3$$

$$f\left(x\right)=\frac{2}{x-1}-3$$

$$f\left(x\right)=-\frac{2}{x+1}-3$$

$$f\left(x\right)=\frac{2}{x+3}+1$$