Q4: The relationship between the pressure P and volume V of the air in a cylinder during the upstroke of a piston in an air compressor can be expressed as P = CV- where k and C are constants. During a compression test, the following data are taken: P(mm Hg) 380 570 760 1140 1520 1900 V(cm3) 17 14.5 12.95 11.05 9.85 9.05 Determine the values of k and C that best fit the data. (Give both numerical values and units.)