Can someone help me to solve those questions?

Suppose market demand for music CDs (in millions per year) is given by the equation QD=9-P, while tickets are supplied according to the market supply equation QS=P-1. Calculate consumer surplus and producer surplus of this market. O CS = 8, PS = 8 O CS = 12, PS = 8 O CS = 8, PS = 12 OCS =16, PS = 16Use the mid-point method (arc elasticity formula) to answer this question. People's income increases from $8,000 to $12,000. As a result, the demand for instant ramen noodles decreases from 13 to 7. What is the income elasticity of demand for instant ramen noodles? 1.5 O-1.5 1 0.66 -0.66The price for a Hyundai Elantra increased by 20%. Meanwhile, the sales of Volkswagen Golf increased by 5% What does this tell you about the relationship between Elantra and Golf? They are O substitutes O complements inferior goods Giffen goodsThe price for a Hyundai Elantra increased by 20%. Meanwhile, the sales of Volkswagen Golf increased by 5% Calculate the cross-price elasticity of demand for VW Golf. Round your answer up to two decimal places. 0.25Anna's demand for brownies is Qd= 100 - 2 P. The price of coffee increases by 10%. As a result, Anna's demand for brownies decreases by 15%. What is the cross-price elasticity of demand for Anna for these two goods? From Anna's perspective, is coffee a substitute or a complement good for brownies? cross-price elasticity of demand = 1.5; substitutes cross-price elasticity of demand = 1.5; complements cross-price elasticity of demand = - 1.5; substitutes cross-price elasticity of demand = - 1.5; complementsAnna's demand for brownies is Qd= 100 - 2 P. The price of cheesecake decreases by 10%. As a result, Anna's demand for brownies decreases from 12 brownies to 8 brownies. What is the cross- price elasticity of demand for Anna for these two goods? Use the mid-point method (arc elasticity formula). 4; substitutes 4; complements O-4; substitutes O-4; complementsSuppose the price elasticity of demand for gasoline is 2. The price of gasoline decreased by 20%. As a result, the demand for gasoline O increases by 40%. increases by 10%. O decreases by 40%. decreases by 10%.The demand for chocolate milk is given by Qp = 36 - 3P. At P=$9 the demand curve is: Inelastic O Elastic O Unitary Perfectly elasticAnna's demand for brownies is Qd= 100 - 2 P. Anna got a raise at work, and her income increases by 25%. As a result, her demand for Cheetos decreases by 20%. What is Anna's income elasticity of demand for Cheetos? What does this income elasticity tell us about Anna's valuation of Cheetos (are Cheetos normal or inferior goods)? 0.8; normal goods O- 0.8; normal goods 0.8; inferior goods O -0.8; inferior goodsWhich of the following statements about the relationship between the price elasticity of demand and revenue is TRUE? If demand is price inelastic, then increasing price will decrease revenue. If demand is price elastic, then decreasing price will increase revenue. If demand is perfectly inelastic, then revenue is the same at any price. O Elasticity is constant along a linear demand curve and so too is revenue.Consider the following graph to answer this question. Assume that the market is perfectly competitive. With tax, we see that the quantity traded decreases from Q to Qtax. After the tax is imposed, which area represents consumer surplus (CS)? Which area represents producer surplus (PS)? Price Supply (no tax) A B C P. E D Ps F Demand (no tax) Qtax QuantityThe market for potatoes has the following demand and supply curves: Demand: P = 20 - 0.01 Q Supply: P = 5 + 0.01 Q When this market is in equilibrium the value of consumer surplus is Less than $500 O Between $500 and $1000 O Between $1000 and $1500 More than $1500Which of the following statement is true? At the market equilibrium price: Buyers who value the product more than the equilibrium price will purchase the product; those who do not, will not purchase. In other words, the free market allocates the supply of a good to the buyers who value it most highly, as measured by their willingness to pay. At the market equilibrium price: Sellers whose costs are less than the equilibrium price will produce the product; those whose costs are higher will not produce the product. In other words, the free market allocates the demand for goods to the sellers who can produce it at the lowest cost. Total surplus is maximized at the market equilibrium. All of the aboveWhich of the following graphs illustrate the price guarantee (subsidy) program? Price S/lb. Price $/1b. Supply $10 Supply $10 $8 $4 Demand Demand Q Corn 3/2 2 3 Q Com 3/2 3 O The left graph The right graph