Suppose the annual demand function for the Honda Accord isQd= 430 - 10PA+ 10PC- 40PG, wherePAandPCare the prices of the Accord and the Toyota Camry respectively (in thousands), and P Gis the price of gasoline (per litre). What is the elasticity of demand of the Accord with respect to the price of a Camry when both cars sell for $20,000 and fuel costs $0.75 per litre? What is the elasticity with respect to the price of gasoline?