$2\mathrm{.}9.$ What is the value of $Z$ after execution? $M$ is any user$-$provided whole number greater than $3.$ ALPHA and P$\_$INITIAL are any user$-$provided real numbers.

INPUT ALPHA, M$,$ P$\_$INITIAL

P$=$P$\_$INITIAL

FOR $K=3,M$

$P=P+$ALPHA $**K$

END FOR

$Z=P$