The temperature is dropping throughout the day as a cold front comes in. In City A, the temperature is changing by −5°F

To determine which city is warmer after 5 hours and the difference in their temperatures, we can calculate the temperatures in both cities after that time period.

City A:

• Initial temperature = 70°F
• Temperature drop = -5°F per hour
• Total drop after 5 hours = 5 hours * -5°F/hour = -25°F
• Temperature after 5 hours in City A = 70°F - 25°F = 45°F

City B:

• Initial temperature = 70°F
• Temperature drop = -3°F per hour
• Total drop after 5 hours = 5 hours * -3°F/hour = -15°F
• Temperature after 5 hours in City B = 70°F - 15°F = 55°F

Comparison:

• Temperature in City A after 5 hours = 45°F
• Temperature in City B after 5 hours = 55°F

City B is warmer at 55°F compared to City A at 45°F.

Difference:

• Temperature difference = 55°F - 45°F = 10°F

Thus, the correct response is: City B is warmer by 10°F.