the volume of a given mass of gas varies directly as the temp T and inversely as the pressure P. A measuring device is calibrated to give V=162.4in^3 when T=290 snf P=25 lb/in^2. What is the volume on this device when the temp is 340 and the pressure is 20 lb/in^2

Jim makes $10.35 per hour. write an equation that jim can use to calculate his pay.

Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?

Need on this geometry question. explain how you did it.