Final temperature of ideal gas with volume change at constant pressure

[slynn2008]

Need help figuring out how to do this type of problem..

The volume of an ideal gas is increased from 0.7 m3 to 2.5 m3 while maintaining a constant pressure of 3000 Pa (1 Pa = 1 N/m2). If the initial temperature is 900K, what is the final temperature (in Kelvin)?

 

[sjb-2812]

What equations do you know that relate temperature to volume for a gas?