Question 3: Q C = 130 0.2 P C + 1.5 P T + 1.98 I where Q C is the demand of Coffee; P C is the price of coffee; P T is the price of tea; I is income. Assume P c = 3 , Pt = 2 , and I = 10 , 000 (a) Find and interpret the own-price of coffee (b) Find and interpret the cross-price of tea (c) Find and interpret the income elasticity (d) If the income raises by 100 what happened to Qc?.