Answer
$\$215.48.$
Work Step by Step
According to the Compound Interest Formula, where $P$ is the principal, the amount deposited, $r$ is the annual interest rate, $n$ is the number of times the interest is compounded annually, $t$ is the number of years, $A$ is the amount you get back after $t$ years:
$A=P\cdot(1+r)^{n\cdot t}.$
Here
$t=0.5$ years
$P=\$200$
$n=12$ (since it is compounded monthly)
$r=1.25\%=0.0125$
Substitute these values into the formula above to obtain: $A=\$200\cdot(1+0.0125)^{12\cdot 0.5}\approx\$215.48.$
