Weegy: C. Seasonal Variation User: The following linear trend equation was developed for the annual sales of the Tractor Manufacturing Company. Y' = 355 + 50t in thousands of dollars. How much are sales increasing by?
A. $50,000 per year
B. $5,00 per month
C. $500,000 per year
D. $6,000 per year Weegy: A. $50,000 per year (More)