Answer:
With base of 3: 
With base of 9: 
Step-by-step explanation:
Use 3 and 9 as the base of the power.

2.74 - (-19.4) = 22.14, so the freezer is 22.14°c colder. I hope that helps!
Answer:
I would start at ( -2, -0) and make a line
Step-by-step explanation:
60, 25% is a quarter of 100%, so 15 + 15 + 15 + 15= 60