Answer:
Step-by-step explanation:
= 
2x = 15
x = 7.5
The relationship between square units is, area is measured in square units. Plus, square units are in an area sometimes.
All you need to do to answer this question is multiply 2 (the dropping temperature) by 7 (time in hours) which is 14. Subtract 14 from 12 and your answer is -2 degrees Fahrenheit
I believe 67 is the correct answer