21. What happens to the demand fo gond it Leplel iE a The deanand decieasca and ths demand su sihite ngld wad b. The demand incicases and the demant e aatn ight t c There as un mpat on demant f the ged and te de ud ve does 6ot One ide imand decteases and dic demand alaifta lad

nwob wobanog ovio brsmab art loded Jebey vlasue bee bnemobt ws iw dnove wod C. Draw the market for Hunt's Ketchup. There is a decrease in the price of tomatoes used by Hunt's and at the same time the price of Heinz Ketchup increases. Assume that Heinz Ketchup and Hunt's Ketchup are substitutes. ud to eah

One of the largest changes in the economyo ver the past several decades is that technologicaladvances have reduced the cost of makingcomputers.a. Draw a supply-and-<lcmand diagram to showwhat happened to price_, quantity, consumersurplus, and producer surplus in the market forcomputers.b. forty years ago, students used typewriters toprepare papers for their classes; today theyusc computers. Docs that make computers andtypewriters complements or substitutes? Usca supply-and--demand diagram to show whathappened to p rice, quantity, consumer surplus_,and producer surplus in the market for typewriters.Should typewriter producers have beenhappy or sad about the technological advance incomputers?c. Arc computers and software complements orsubstitutes? Draw a supply-and-demand diagramto show what happened to price, quantity,consumer surplus, and producer surplus in themarket for software. Should software producershave been happy or sad about the technologicaladvance in computers?d. Docs…

Higher average incomes increase the demand for preventive dental visits. Explain why this will lead the quantity supplied of dental visits to increase, but supply will not increase.