《数学高分快速突破》(陈向东)有道题没看懂(1)的意思,求解
Mr. Dan deposits $10000 in a savings certifacate earning p percent annual interest compound quarterly.
What is the value of p?
(1) During the term of the certificate, he earns $18 more than he would if the intrest were not compound.
(2)He withdraws all the money six months after depositing it.