PLEASE HELP
SOLVE THE EQUATION USING ELIMINATION

3x+8y=-5

-2x+2y=18

2x minus y equals 6, x plus y equals negative 3

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 .

The function f(x) is shown in this graph the function g(x)=6x