Graphing Exponential Functions

What is the y-intercept of the function $f(x) = 3 \cdot 2^x$?

Which of the following transformations represents the function $g(x) = 2^{x-3} + 1$?

What is the horizontal asymptote of the function $h(x) = 5 \cdot 3^x - 2$?

For the function $j(x) = 4 \cdot (1/2)^x$, what is the value of $j(2)$?

Which of the following is the correct equation for the exponential decay function that passes through the point (0, 5) and has a decay factor of 0.8?

What is the domain of the function $k(x) = 7^x$?

Given the function $m(x) = e^{-x}$, what is the value of $m(0)$?

Which of the following statements about the graph of $p(x) = 2^x$ is true?

What is the range of the function $q(x) = 3 \cdot (2^x) - 4$?

If the function $r(x) = a \cdot b^x$ is defined such that $a = 2$ and $b = -3$, what can be said about its graph?