Question

英文数学题

99.2% of ATMs levy a surcharge on users who are not account holders. The
amount of the surcharge for non-account holders can be modeled as
s(t) = 0.72(1.081t) dollars

where t is the number of years since 1995, data from 3 ≤ t ≤ 13.†

(a) Calculate the average rate of change in the amount of the
surcharge for non-account holders between 2000 and 2007. Write the
result in a sentence of interpretation. (Round your answer to two
decimal places.)

Between 2000 and 2007, the ATM surcharge for non account holders increased by an average of $________

per year.

(b) Calculate the change and the percentage change in the
amount of the surcharge for non-account holders between 2000 and 2007.
(Round your answers to two decimal places.)

change
$_________

percentage change
____________
%
只需要三个空的答案，求帮助
表达式是s(t) = 0.72(1.081的t次方)

Answer 1

S（t）= 0.72*1.081^t  (t=年份-1995,且3≤T≤13),则计算如下:

1、0.52

2、3.65

3、220.44%

Answer 2

99.2%自动柜员机征收附加费都没有用户帐户持有人。的
非户口持有人的附加费的金额可以建模为
S（t）= 0.72（1.081t）美元
其中T是自1995以来的年数，从3≤T≤13†数据。
（一）计算的数额平均变化率
非户口持有人2000和2007之间的附加费。写的
在一个句子的解释结果。（在你的回答两个
小数。）
2000和2007之间，非户口持有人ATM附加费增加________美元平均
每一年。
（b）计算，在变化的百分比变化
非户口持有人2000和2007之间的附加量。
（在你的两位小数。答案）
改变
_________美元
变化百分比
____________
%
先翻译一下，哈哈
哎，不会，多包含