60 cubic feet of air at 30 PSIG and 50 degrees F is compressed to 80 PSIG and 110 degrees F. What is the final volume?

use the conversions from

1. pressure:
psig (rel) to psi (absolute) by adding 14.69595 psi.
2. temperature:
°F to °K by
(°F-31)*5/9+273.15

Then use the ideal gas formula:
P1 V1 / T1 = P2 V2 / T2
to calculate V2