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英语翻译The demand equation for home-baked pies is given bu 2p=

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英语翻译
The demand equation for home-baked pies is given bu 2p= -q + 350 where p is the price of each pie(in cents) when q pies are demanded.
a.What is the effect on sales of pies if the price is increased by 10 cents?
b.What is the effect of a 5-cent price decrease?
c.Suppose the current price of 150 cents is increased to 175 cents.What will be the effect on the revenue?(Revenue is the product of demand and price)
英语翻译The demand equation for home-baked pies is given bu 2p=
家里烘烤的馅饼的价格需求公式是2p= -q + 350,p表示每块馅饼的价格(单位是cents),q表示需要的馅饼的块数.
a,如果价格上涨了10cents,那么对这个馅饼的销售有什么影响?
b,如果价格上涨了5cents,有什么影响?
c,假设现在价钱由150cents涨至175cents,对收入有什么影响?