On Wednesday, the temperature was 21 above zero. On Thursday, it was 4 below zero.
The integer __ corresponds to the temperature on Wednesday.
The integer __ corresponds to the temperature on Thursday.
To find the temperature on Wednesday, we see that it was 21 above zero. Since "above zero" means positive, we can say that the temperature on Wednesday is 21.
To find the temperature on Thursday, we see that it was 4 below zero. Since "below zero" means negative, we can say that the temperature on Thursday is -4.
On Wednesday, the temperature was 21 above zero
so, what do you think on the 1st question?