Final answer:
To graph the function f(x) = 18(0.8), plot the points (x, 14.4) for all values of x and connect them with a horizontal line.
Step-by-step explanation:
To graph the function f(x) = 18(0.8), we can start by creating a table of values for x and calculating the corresponding y-values. Since the function is a constant value, the y-value will be 14.4 for all values of x. We can then plot these points on a graph and connect them with a horizontal line.