解答
解答
求解步骤
Translate the problem into an equation:
流行的例子
Feng is going to invest in an account paying an interest rate of 6.5% compounded quarterly. How much would Feng need to invest, to the nearest dollar, for the value of the account to reach 2,550 in 18 years?Ashley is 10 years older than her sister Brianna. Two years ago, Ashley was 6 times:Brianna's age. How old is Brianna now?Andrew is going to invest in an account paying an interest rate of 2.2% compounded quarterly. How much would Andrew need to invest, to the nearest hundred dollars, for the value of the account to reach 93,000 in 19 years?Mackenzie invested 770 in an account paying an interest rate of 6.1% compounded continuously. Assuming no deposits or withdrawals are made, how long would it take, to the nearest year, for the value of the account to reach 1,830?Calculate the probability of a card that was a heart or spade