Question

The temperature is 21°C below zero.

Which integer represents this temperature?

A. +21
B. -21

Answer 1

B. -21

Explanation:

The keyword we have is "below zero". When using the term "below zero" to describe an integer, this means the integer would be a NEGATIVE number. The temperature is 21 degrees below zero meaning its integer form is -21.

Answer 2

B. -21 s\

Step-by-step explanation: If we had a number line

--- -21 --------------------------------------0-------------------------------21--------------- 0