A spherical tank of CO2 @ 3 atm & 20oCis exposed to a fire that raises its temperature to80oC, a [numerical] factor of 4. Does the pressureincrease by 4x? Use equations to answer.

I’ve looked at the solutions posted on this site and they saythe pressure does increase by a factor of 4, but don’t we need toconvert the temperature into kelvin then plug it into the equation?Whenever I do this problem I get the pressure to be increase by afactor of 1.2 and not 4. Any clarfication would help.