The temperature is dropping throughout the day as a cold front comes in. In City A, the temperature is changing by 5°F per hour, and in City B, the temperature is changing by -3°F
per hour. If the temperatures in both cities started at 70°F, which city is warmer, and what is the difference in their temperatures after 5 hours? (1 point)
O City A is warmer by 2°F.
O City B is warmer by 2°F.
• City A is warmer by 10°F.
O City B is warmer by 10°F.
In City A, the temperature is changing by 5°F per hour. After 5 hours, the temperature will have changed by 5°F * 5 hours = <<5*5=25>>25°F.
In City B, the temperature is changing by -3°F per hour. After 5 hours, the temperature will have changed by -3°F * 5 hours = -<<-3*5=-15>>15°F.
The temperature in City A after 5 hours will be 70°F + 25°F = <<70+25=95>>95°F.
The temperature in City B after 5 hours will be 70°F +(-15°F) = 70°F - 15°F = <<70+(-15)=55>>55°F.
Therefore, City A is warmer by 95°F - 55°F = <<95-55=40>>40°F. Answer: \boxed{40}.