Question is long and on the description

Question

On a cool autumn morning (36F) you check the air pressure in your tires before leaving for school. The gauge reads 31.7 psi. When you get home that afternoon, you check the air pressure again and the gauge reads 32.9psi. Assuming no volume change in the tires what is the new Fahrenheit temperature of the gas in your tires if you live at sea level?

Answer 1

Convert F to C to K, then use Gay-Lussac's law (P₁/T₁ = P₂/T₂) to find the new temp in Kelvins; convert this back to C then F and you have the answer.