Question

Since 12:00 am., a cold front has caused the tempurature in a particular city to decrease at a constant rate. At 2:00 a.m., the tempurature was 54 degrees Farenheit, and at 5:00 a.m., the tempurature was 45 degrees Fahrenheit. Which of the following statements is correct?

A. The tempurature at 12:00 a.m. was 57 degrees Fahrenheit.


B. The tempurature at 12.00 a.m was 60 degrees Fahrenheit.


C. The tempurature at 12:00 a.m was 63 degrees Fahrenheit.


D. The tempurature is decreasingn at a rate of 9 degrees Fahrenheit per hour.

Answer 1

Answer: B.

Step-by-step explanation: First, you find the difference between 2 and 5 =( 3 ), and 54 and 45 ( -9 ). Meaning the unit rate is -3. (-9/3 = -3)

The difference between 12:00 am and 2:00 am is 2 hours meaning 2 x 3 is 6. 54 + 6 = 60 meaning at 12:00 am it was 60 degrees Fahrenheit.