Know and use simple properties and graphs of logarithmic and exponential functions, including ln x and e^x. Understand that f(x) = e^x and g(x) = ln x are inverse functions. Understand the asymptotic nature of logarithmic and exponential graphs and state equations of asymptotes. Graphs are limited to y = ke^(nx) + a and y = k ln(ax + b), where n, k, a and b are integers. Series expansions are not required.