So month 17 would Du y = 5,167 + 60.86 * 17 y = 6,202 tonnes Adve ound to be a reli) The Test your understanding 6 W plc is preparing its budgets for next year. The following regression equation has been found to estimate of W ple's deseasonalised sales in units. y = 10x + 420 Where y is the total sales units and x refers to the ac Quarterly seasonal variations have been found to be he accounting pent -30% A identify the seasonal Q1 Q2 Q3 +10% +25% -5% In accounting period 33 (which is quarter 4) identify the se adjusted sales units: A 525 B. 589 750 D 975