Please explain in detail the steps to solving these problems. #6/#7/#20/#27
6. Graph exponential function f(x) = 3^(x - 4)
7. graph f(x) = 2^(x +1)
20. There are currently 73 million cars in a certain country, increasing by 1.7% annually. How many years will it take for this country to have 91 million cars? Round to the nearest year.
27. Determine the function which corresponds to the given graph
the asymptote is x = 1.
The solution explains how to determine the graphs of exponential and logarithmic function in detail.