i need help on this cz i dont get it

Answer:
B. 39 °
Step-by-step explanation:
45 - 4 = 41
41 + 2 = 43
43 -7 = 36
36 - 1 = 35
35 + 3 = 38
38 + 1 = 39
So the answer is 39 ° F
Answer:
It would be 39
Step-by-step explanation:
So its was 45F at the start
then you go down the list
45-4=41
41+2=43
43-7=36
36-1=35
35+3=38
38+1=39
So at 2:00 PM the end temperature was 39 degrees
Hope that helped :D