The 6 a. m. temperature for four constructive days in the town of lincoln were -21.1 °c, -7.8°c, -14.3°c, and -14.3°c. what was the average 6 o'clock a. m. temperature for the four days

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 .