1.The GDP of a certain country is growing at a constant rate.In 1995 the GDP was 125 billion dollars,and in 2003 it was 155 billion dollars.If this trend continues,at what percentage rate will the GDP be growing in 2010?2.A manufacturer can produce d

1.The GDP of a certain country is growing at a constant rate.In 1995 the GDP was 125 billion dollars,and in 2003 it was 155 billion dollars.If this trend continues,at what percentage rate will the GDP be growing in 2010?2.A manufacturer can produce d
1.The GDP of a certain country is growing at a constant rate.In 1995 the GDP was 125 billion dollars,and in 2003 it was 155 billion dollars.If this trend continues,at what percentage rate will the GDP be growing in 2010?
2.A manufacturer can produce digital recorders at a cost of $50 apiece.It is estimated that if the recorders are sold for p dollars apiece,consumers will buy q=120-p recorders each month.
a.express the manufacturer's profit P as a function of q.
b.What is the average rate of profit obtained as the level of production increases from q=0 to q=20?
c.at what rate is profit changing when q=20 recorders are produced?Is the profit increasing or decreasing at this level of production?

1.The GDP of a certain country is growing at a constant rate.In 1995 the GDP was 125 billion dollars,and in 2003 it was 155 billion dollars.If this trend continues,at what percentage rate will the GDP be growing in 2010?2.A manufacturer can produce d
（本人拒绝电子翻译,全人工翻译,如果有错多多包涵）
1.GDP在国家里面是经常按照一个比率而增长的.在1995年某个国家的GDP是1250亿美元,而到了2003年就变为1550亿美元.如果按照这个趋势,那么到了2010年,GDP将增长多少个百分比?
答:95年到03年长了300亿,10年多少呢?
2.制造商每制造一台电子记录仪（录音机?）就要花费50美元.如果按p美元的价格出售,这种记录仪每个月就可以卖出q=120-p的数量.
A.请给出价格P关于数量Q的商品利润函数方程
B.当q=0向q=20变化时,商品利润的平均价是多少.
C.当q=20时,商品的平均价是多少?利润在此时是增加还是减少?
答：A：很简单的二元一次函数方程,设利润为Z,Z=（p-50)*q q=120-p
B:有了上面的函数方程,这个不用说了.可以画图,更直观
C：q=20代入,看图说话
希望对你有用,困了睡觉.

1.某国GDP以一个固定的增长率增长，1995年的GDP为1250亿美元，而2003年为1550亿美元，问照此趋势下去，到了2010年，其GDP增长率为百分之多少？

需要开方

这道题的意思是 BARBARA以80KM/H的速度去参加一个婚礼，一个小时以后他的父母从同一地点同一条路以100KM/H速度追赶，问到几千米的地方会追上
假设到用了X小时追上
80X+80=100X X=4
那100*4=400KM 也就是说在400KM的地方他的父母追上了他