Final answer:
To find the distance between the two cities on the map, we can set up a proportion using the scale. The scale tells us that 1 inch is equivalent to 18 miles. Solving for x, we find that the distance between the two cities on the map is approximately 0.222 inches. There is no option.
Step-by-step explanation:
To find the distance between the two cities on the map, we can set up a proportion using the scale. The scale tells us that 1 inch is equivalent to 18 miles. So, we can set up the equation:
1 inch / 18 miles = x inches / 4 miles
Solving for x, we can cross-multiply:
x inches = (1 inch * 4 miles) / 18 miles
x inches = 0.222 inches
Therefore, the distance between the two cities on the map is approximately 0.222 inches. None of the given options match this exact value, so there might be a missing or incorrect option.