The quantity z varies directly with w and inversely with x and y When w = -12, x = 9, and y = -12, z = -1. Find z when w = -6, X = -9, and y = -2.
Write your answer in exact form.

The average daily maximum temperature for laura’s hometown can be modeled by the function f(x)=4.5sin(πx/6)+11.8 , where f(x) is the temperature in °c and x is the month. x = 0 corresponds to january.what is the average daily maximum temperature in may? round to the nearest tenth of a degree if needed.use 3.14 for π .