how to solvethis problem The equation y=350-2.5x is used to predict quarterly demand where x = 0 in the second quarter of last year. Quarterly…

how to solvethis problemThe equation y=350-2.5x is used to predict quarterly demand where x = 0 in the second quarter of last year. Quarterly seasonal factors are Q1=1.5, Q2=0.8, Q3=1.1, Q4=0.6. What is the forecast for the last quarter?