Question 1198387
The formula for annual compound interest is as follows:

{{{A = P (1+ r/m)^(mt)}}}

Where:

{{{A }}}- the future amount of the loan
{{{P}}} - the initial amount  =>{{{P= 200 }}}
{{{r }}}- the annual interest rate (in decimal)=>{{{r=0.18}}}
{{{m }}}- the number of times the interest is compounded per year (compounding frequency)=>{{{m=4}}}
{{{t }}}- the numbers of years the money is invested for=>{{{t=7}}}

{{{A  = 200 (1+ 0.18/4)^(4*7)}}}
{{{A  = 200 (1.045)^28}}}
{{{A  = 200 (1.045)^28}}}
{{{A  =685.94}}}

{{{A = P + I }}}where
{{{P = 200.00}}}
{{{I = 485.94}}}=>the interest due on the loan