1 inch = 400 miles The scale gives the relationship between the measurements of the drawing or model and the measurements of the real object.
We have the expression:

When we have rational functions, where the denominator is a function of x, we have a restriction for the domain for any value of x that makes the denominator equal to 0.
That is because if the denominator is 0, then we have a function f(x) that is a division by zero and is undefined.
If we have a value that makes f(x) to be undefined, then this value of x does not belong to the domain of f(x).
Expression:

Answer: There is no restriction for x in the expression.
Answer:
Length=5
Width=100
Step-by-step explanation:
area of a rectangle=length x width
500= 5 x 100
500=500
Answer:
Just units
Step-by-step explanation:
Looking for perimeter, not area and volume