英文数学题
Youinvest$5000inanaccountwhichpaysinterestcompoundedcontinuously.
(a)Howmuchmoneyisintheaccountafter9years,iftheannualinterestrateis5%?
Roundyouranswertotwodecimalplaces.
Thebalanceisabout$_______
(b)Ifyouwanttheaccounttocontain$8500after9years,whatyearlyinterestrateisneeded?
Roundyouranswertoonedecimalplace.
Theraterequiredisabout.________%
真的不会做了,谢谢各位大神