algebra
posted by snow .
2,200 after 3 years if the account pays 8.4%
i have no clue what this is

What is the question?
It helps to post the complete question even though there is more typing to do.
I suppose the question requires you to calculate the original deposit (principal) three years ago.
At 8.4% p.a. compound interest,
$1000 will yield 1000*(1.084³) after three years, or $1273.76.
If the combined interest and principal after three years is $2200, the the principal can be calculated by proportion, namely
P=1000*(2200/1273.76)=$1727.17
So check if my assumptions correspond to those of the question. If not, please post the complete question.
Respond to this Question
Similar Questions

Annuities
Victore French mad a deposit of 5000 at the end of ech quarter to book bank, which pays 8% intrest compounded quarterly. After 3 years, Victor made no more depostis. What will be the banance in the account 2 years after the last deposit. … 
Precalculus
NEED HELP ASAP PLEASE!! A savings account starts with $600 and pays 5% interest per year, compounded four times per year. a) A function that models the amount in dollars in the bank account after m years is A(m)=____________? 
math
Suppose a young couple deposits $700 at the end of each quarter in an account that earns 7.1%, compounded quarterly, for a period of 6 years. After the 6 years, they start a family and find they can contribute only $200 per quarter. … 
algebra
Suppose Mary deposits $200 at the end of each month for 30 years into an account that pays 5% interest compounded monthly. How much total money will she have in the account at the end? 
math
Suppose $500 is divided into two bank accounts. One account pays 15% simple interest per year and the other pays 10%. After three years there is a total of $200 in interest between the two accounts. How much was invested into the bank … 
Algebra Grade 7
If a bank offers a savings account that pays simple interest rate of 4% and you deposit $475.00 into this account, how much interest will you have earned after 3 years? 
prealgebra
You split $1500 between two savings accounts. Account A pays annual 5% interest and Account B pays 4% annual interest. After one year,you have earned a total of $69.50 in interest. How much money did you invest in each account? 
differential equation
If P(t) is the amount of dollars in a savings bank account that pays a yearly interest rate of r% compounded continuously ,then dP/dt=(r/100)(P) , t in years . Assume the interest is 5% annually ,P(0)=$1000 ,and no monies are withdrawn … 
algebra
you invest $2800 in an account that pays an interest of 5.5%, compounded continuously. calculate the balance of your account after 12 years. 
Algebra
Suppose that you deposit $1735.50 in a savings account that pays 9.25% annual interest with interest created to the account at the end of each year. Assuming no withdrawals are made, find the balance in the account after 4 years