Question

For a fixed amount of gas at a constant temperature, the volume of the gas is inversely proportional to its pressure. The function mc006-1.jpg relates the volume in cubic inches and pressure in pounds per square inch of a gas. What is the volume when the pressure is 900 pounds per square inch?
0.05 in.3
0.5 in.3
20 in.3
200 in.3

Answer 1

Inverse variation: V = k/P. From the given function the constant is k = 18000, so at P = 900,
V = 18000/900 = 20 in^3.

Answer: 20 in^3.