Final answer:
Carlos will have to walk 1.5 miles from his house to the school.
Step-by-step explanation:
To determine the actual distance Carlos will have to walk, we need to use the given scale of the map: 1 inch = 4 miles. The distance from his house to the school on the map is 3/8 inches. We can set up a proportion to find the actual distance:
1 inch : 4 miles = 3/8 inches : x miles
Cross multiplying, we get (1 inch)(x miles) = (4 miles)(3/8 inches)
Simplifying, we have x miles = (4 miles)(3/8 inches) / (1 inch)
x miles = (12/8) miles = 1.5 miles
Therefore, Carlos will have to walk 1.5 miles from his house to the school.