1. Given the summary of sales and prices below. Where sales is the quantity demanded of the consumers. (10 points) Sales Prices 0 140 600 80 800 50 1000 402. Given the data below. Where Sales is the quantity demanded (20 points). Year Sales Price (million pesos) (million pesos) 1997 44 1 1998 58 1.2 1999 48 2 2000 46 1.8 2001 42 2.1 2002 60 0.8 2003 52 1.4 2004 54 2005 56 1.5 2006 40 1.0