and y = 34 when x = 5. 157.44 163.2 165.61 167.6 7. Find y when x = 88, if y varies inversely as x, and y = 31 when x = = 139.* *Round your answer to the nearest thousandth. y = = 8. Find y when x = 6 and z = and z, and y = 38 and x = 6, if y varies jointly as x 6 when z = = 3.* *Round your answer to the nearest thousandth.