Consider the demand function for processed pork in Canada,
Q=171-20p + 20pb +3pc +0.002Y
where Q is the quantity of pork demanded (measured in millions of kg per year), p is the price of pork, Pb is the price
of beef, pc is the price of chicken, and Y is the income of consumers.
If per capita income, Y, increases by $120 a year, then the quantity demanded changes by
(Enter a numeric response using a real number rounded to two decimal places.)
million kg. per year.