If $21,000 is invested at an interest rate of 5% per year, find the amount of the investment at the end of 4 years for the following compounding methods. (Round your answers to the nearest cent.) (a) Semiannual
$
(b) Quarterly
$
(c) Monthly
$
(d) Continuously
$

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!

Provide an equation