Answer:
-7
Step-by-step explanation:
The answer is -7 degrees per hour because if it changes the same over 4 hours, and changes -28 degrees in total, you can divide the two (-28/4), and you will get -7 degrees per hour.
4x^2-9
=(2x)^2 -3^2
=(2x+3) (2x-3)
Hope this helps you.
Answer
Let me know if you have any other questions :-):-)
Answer: -1/3 is the correct answer
