Question

两道英文数学题

1：

The number of Internet users in Mexico between 2004 and 2008 can be modeled as
u(t) = 8.02(1.17t) million users

where t is the number of years since 2004.†
(a) On average, what was the rate of change in the number of Internet users in Mexico between 2004 and 2006? (Round your answer to three decimal places. __________million users per year

(b) What was the percentage change in the number of Internet users in Mexico between 2004 and 2006? (Round your answer to three decimal places.) _______%

(c) The population of Mexico in 2008 was 109,955,400. What
percentage of the Mexican population used the Internet in 2008? (Round
your answer to three decimal places.) ______________ %
只需要三个空的答案，求帮助！

Answer 1

1\函数关系没有写清楚 u(t) = 8.02(1.17t)
2\第一个空格是问2004年-2006年间,互联网用户平均变化是多少?
3\第二问是04年到06年变化率
4\已知2008年墨西哥总人口,则互联网用户占总人口比例是多少(三位小数)

追问

我要的是答案...
函数关系是8.02(1.17的t次方)

追答

如果建模公式是8.02*1.17^t (t为2004年以来的年数!) ,则计算如下:

1、1.479

2、36.890%

3、13.668%