Samantha puts an initial $500 into a savings account. The account has a 4% annual compound interest rate. What is the equation that best represents Samantha's account?

Hint: Use the formula y = P (1 + r) x.

y = 500 (1.4) x

y = 500 (0.04) x

y = 500 (1.04) x

y = 500 (0.4) x

In the equation, P would be the principle, or the amount in this case, multiplied by the annual rate raised by the number of years. 4% in decimal form would be. 04, adding 1 to it includes the total principle plus the 4%, if you just multiplied by. 04 you would be taking 4% of the $500. The answer is C.