Final answer:
The temperature on Wednesday corresponds to the integer +27, as it was 27 degrees above zero. For Thursday's temperature of 2 below zero, the integer would be -2.
Step-by-step explanation:
The integer that corresponds to the temperature on Wednesday when it was 27 degrees above zero is +27.
Temperature scales such as Celsius (C) and Fahrenheit (F) use positives and negatives to indicate temperatures above and below zero, respectively.
Thus, a positive integer is used for temperatures above zero and a negative integer for temperatures below zero.
Therefore, for Thursday, when the temperature was 2 below zero, the corresponding integer is -2.