Answer:
-18 C°
Step-by-step explanation:
Warmed means add cooled means subtract
starting at -23 it warmed by 8 add 8
-15
it warmed by 3 more add 3
-12
then it cooled by 6 subtract 6
-18
% increase = 100 - 85
--------- * 100
85
= 17.65
= 18 % to nearest per cent
Answer:
Rate of change = 2 & Initial value = -1
