首页
登录
职称英语
A college student expects to earn at least $1,000 in interest on an initial inve
A college student expects to earn at least $1,000 in interest on an initial inve
游客
2025-02-23
7
管理
问题
A college student expects to earn at least $1,000 in interest on an initial investment of $20,000. If the money is invested for one year at interest compounded quarterly, what is the least annual interest rate that would achieve the goal?
选项
答案
4.91 percent
解析
According to the formula for r percent annual interest, compounded quarterly, the value of the investment after 1 year is
By setting this value greater than or equal to $21,000 and solving for r, we get
We can use the fact that taking the positive fourth root of each side of an inequality preserves the direction of the inequality. This is also true for the positive square root or any other positive root.
To compute the fourth root, we can use the fact that
for x ≥ 0; that is, we can compute a fourth root by taking a square root twice:
So the least annual interest rate is approximately 4.91 percent.
转载请注明原文地址:https://tihaiku.com/zcyy/3969994.html
相关试题推荐
InlearningEnglishweshouldnot______ourstudentsoftheirmistakesallthet
Ifyouspeakslowlyandclearly,thestudentswill______themeaning.A、takeon
Thatstudent______hishandeverytimeIaskedaquestion.A、madeupB、putupC、r
______ofthestudentsinourclassarefromthenorth.A、TwoninthB、Secondnint
Manystudentsfindtheexperienceofattendinguniversitylecturestobeac
Manystudentsfindtheexperienceofattendinguniversitylecturestobeac
Manystudentsfindtheexperienceofattendinguniversitylecturestobeac
Manystudentsfindtheexperienceofattendinguniversitylecturestobeac
Manystudentsfindtheexperienceofattendinguniversitylecturestobeac
Manystudentsfindtheexperienceofattendinguniversitylecturestobeac
随机试题
Theplanet’swildcreaturesfaceanewthreat—fromyuppies(雅皮士),emptynest
CATVisashortwayofsaying"communityantenna(天线)television".But"cable
螺内酯与下列哪种氨基酸合用可导致高钾血症A.赖氨酸 B.色氨酸 C.苯丙氨酸
有关氟烷的作用。正确的是()A.有扩张脑血管作用,使ICP升高 B.随吸入
促进基本公共卫生服务逐步均等化的主要任务是A.制定和实施基本公共卫生服务项目
“”表示()。A.重音记号 B.呼吸记号 C.延长音记号 D.反复记号
把下列的六个图形分为两类,使每一类图形都有各自的共同特征或规律,分类正确的一项是
A.如题干所述 B.如题干所述 C.如题干所述 D.如题干所述
3艘船舶航行到乙港后,该港由于生产任务重,只能一次安排1艘船舶卸货,如果要求
最早有关学习迁移的代表性理论是() A.形式训练说B.共同要素说C.经验
最新回复
(
0
)