Final answer:
The actual distance between Bay City and Greenwood is 20 miles.
Step-by-step explanation:
To find the actual distance between Bay City and Greenwood, we need to use the given scale. The scale states that 3 inches on the map represents 15 miles. Since Bay City and Greenwood are 4 inches apart on the map, we can set up a proportion to find the actual distance.
3 inches on the map represents 15 miles.
4 inches on the map represents x miles (the actual distance).
By setting up this proportion, we can solve for x. Cross-multiplying, we get: 3x = 60. Dividing both sides by 3, we find that x = 20.
The actual distance between Bay City and Greenwood is 20 miles.