几道数学题
1.Supposeyouhaveabudgetof450dollarsforonemonth.YouwouldliketobuysometextbooksandCDs.Theaveragecostofabookis55dollarseachandthatofaCDis16dollarseach.LetxdenotethenumberofbooksyoubuyandydenotethenumberofCDsthatyoubuy.
Writetheequationofyourbudgetconstraintintheformy=mx+b,wheremandbaresomenumbers.
Answer:y=()
2.(1pt)Redoproblem12insection1.4ofyourtextbook(page30)abouttherunningshoemanufacturer,butuseafixedoverheadof$710000.00,variablecostsof$45.00,andasellingpriceof$85.00.
Marginalcost=()
Marginalrevenue=()
Marginalprofit=()
3.(1pt)Redoproblem16insection1.4ofyourtextbook(page30)
aboutthetractor,butassumethetractorhasaninitialpriceof$62000.00andsellsfor$1600.00after22years.
(a)Formulaforthetractor'svalueasafunctionoftimetsincepurchase:V(t)=()
(b)Horizontalinterceptofthevaluefunction()
希望写出答案并告之过程,谢谢了
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