Final answer:
Dom's speed was calculated using the formula for average speed, which is distance divided by time. Given that he drove for 3 hours and covered 186 miles, his average speed was 62 miles per hour.
Step-by-step explanation:
To determine Dom's speed in miles per hour (mph), we need to use the formula for average speed, which is:
Speed (mph) = Distance (miles) ÷ Time (hours)
In this case, Dom drove for 3 hours and covered 186 miles. So, we can calculate his speed as follows:
Speed = 186 miles ÷ 3 hours = 62 mph
Therefore, Dom's average speed was 62 mph.