Graphing Exponential Functions

What is the y-intercept of the function

$$f\left(x\right)=9\cdot\left(3\right)^x$$

Which 2 statements are correct about the graph of the function

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

Which 2 statements are correct about the graph of the function

$$f\left(x\right)=4\cdot\left(\frac{1}{2}\right)^x$$

The exponential function graphed has a horizontal asymptote at y=?

(a)  

The exponential function graphed has a horizontal asymptote at y=?

(a)  

What is the range of the exponential function graphed?

What is the domain of the exponential function graphed?

What is the y-intercept of the function $$f\left(x\right)=3\cdot4^x$$ ?

(0,?)

(a)