The domain of a function is the set of input (x-) values for which the function is defined. The range is the set of output (y-) values; often there are limitations.
For example, the sine function y = sin x is defined for all real x; for every input x, there is a corresponding output y. The sine function has a limited range in that the minimum value of the sine is -1 and the max is +1. There is no graph above y = -1 or below y = +1.
For us to know the wingspan of the model that was brought by Carla, we need to multiply the total wingspan of the Wright brothers' flyer to the scale factor that was given. The equation will be [ 48 inches * 1/40 = 1.2 inches ]. The answer is 1.2 inches.