The main denominator is 6
We don't see the choices but the answer will be something like

Answer:
Step-by-step explanation:
Statistically this is valid
But, in Alaska average daytime summer temperatures range from approximately 55 to 78 °F (12.8 to 25.6 °C); average daytime winter temperatures are about 5 to 30 °F (−15.0 to −1.1 °C). SO, they don't need cooling when compared to rest of the USA. Therefore this will not be valid.
Make the u substitution
u=x^2
du=x dx
it should simplify the problem