Answer
${{\$}} 215.48$
Work Step by Step
The amount A after t years due to a principal P
invested at an annual interest rate r, expressed as a decimal,
compounded n times per year is $A=P\displaystyle \cdot(1+\frac{r}{n})^{nt}$
---
compounded $n=12$ times per year$, r=0.0125\times 12$ (monthly rate given)
$t=0.5, nt=6, $
$P=200$
$A=200\displaystyle \cdot(1+\frac{0.0125\times 12}{12})^{6}=200\cdot(1.0125)^{6}\approx 215.48$
