What is the ending value of $y?$ sqrt$($u$)$ returns the square root of $u.$ pow $(u,v)$ returns $u$ raised to

$x=9\mathrm{.}0$;

$y=4\mathrm{.}0$

$y=$pow$(\sqrt[\phantom{2}]{x},\sqrt[\phantom{2}]{y})$

$6561$

$9$

$8$

Error: The sqrt functions cannot appear in the call to the pow