If $1,000 is invested in an account that pays 4% interest compounded annually, an expression that represents the amount in the account at end of three years can be given by which of the following equations?
a. 1000+0.4^3
b. 1000(0.3)^3
c. 1000(1.04)^3

Let's see here... the answer is C just by using common sense. A doesn't make sense because you can't cube .4, as it is a percentage, and you wouldn't add that to 1000. B makes no sense because the percentage you are using is 4%, not 30%. Of course, just be sure to fact-check me there.

Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,