Answer: 7
Step-by-step explanation:
First and foremost, we should note that when we estimate 52.14 degrees to the nearest whole number would be 52 degrees.
Also, when we estimate 44.65 degrees to the nearest whole number will be 45. This is because the number in it's tenth place is above 4 which means we'll add 1 to 44 making 45.
Then the best estimate of the number of degrees that the temperature has risen will be the difference between 52 and 45 which is:
= 52 - 45
= 7
