posted by Lucy .
The volume V of a gas varies inversly as pressure P is exerted. If V is 3.5 liters when P is 5 atmospheres, find V when P is 8 atmospheres.
Answer: 2.188 liters
2) If y varies jointly as x and the cube of z, and y=378 when x=4 and z=3, find y when x=9 and z=2.