Samantha puts an initial $500 into a savings account. the account has a 4% annual compound interest rate. what is the function that best represents samantha's account and how much does she have in savings after 5 years? round your answer to the nearest dollar. hint: use the formula, f(x) = p(1 + r)x

a.) f(x) = 500(1.4)x, $2,689
b.) f(x) = 500(0.04)x, $512
c.) f(x) = 500(1.04)x, $608
d.) f(x) = 500(1.04)x, $527