Answer:
The functions f(x) = 12x and g(x) = √(x - 12) do not have any key features in common.
The function f(x) is a linear function, which means that it is a straight line on a graph. The slope of this line is 12, and the y-intercept (the point at which the line crosses the y-axis) is 0.
The function g(x) is a square root function, which means that it is a curve on a graph that represents the positive square root of a value. The y-values of this function will always be non-negative, since the square root of a non-negative number is always non-negative. The graph of this function will have a horizontal asymptote at y = 0, meaning that it will get closer and closer to the x-axis but will never actually touch it.
These two functions do not have any key features in common, since one is a straight line and the other is a curve.