Final answer:
A 120-pound woman running at 9 mph for 30 minutes will burn approximately 370.8 calories.
Step-by-step explanation:
To calculate the number of calories burned by a 120-pound woman running at 9 mph for 30 minutes, we need to use the given rate of caloric expenditure which is 0.103 calories per pound per minute. Here is the step-by-step calculation:
Multiply the weight of the person (in pounds) by the caloric expenditure rate to determine the number of calories burned per minute. For a 120-pound woman, this is 120 pounds * 0.103 calories/pound/minute = 12.36 calories/minute.
To find out the total number of calories burned in 30 minutes, multiply the number of calories burned per minute by the total number of minutes. So, 12.36 calories/minute * 30 minutes = 370.8 calories.
Therefore, a 120-pound woman will burn approximately 370.8 calories running at a pace of 9 mph for 30 minutes.