Answer:
x>-15 degrees
Step-by-step explanation The question states that the temperature has to stay above 15 so then it could be anything above -15 degrees.
Answer:
Step-by-step explanation:
There is no algebraic way to solve such an equation. It can be simplified to ...

This has solutions at x=1 and x=2 as shown in the attached graph.
__
The second attachment shows the functions graphed on the same graph.
The circumference is pi times the diameter of the circle. The radius is half of the diameter. In this case, the radius is then 36.