BD$17$

"Scott and Associates, Inc.$$

$$

$123$

$1101632$

$2142240$

$3222434$

$($a$)(1$ MB $)$

$($b$)($ xij $$ xij $$ i $$ j $)$

$\_\_\_\_\_$

s$.$t$.$

$\_\_\_\_\_$

$\_\_\_\_\_\_$

$\_\_\_\_\_$

$1\_\_\_\_\_\_$

$2\_\_\_\_\_\_$

$3\_\_\_\_\_\_$

xij $0$ for all i$$ j$$

$.$

$()$

x$11$

x$12$

x$13$

x$21$

x$22$

x$23$

x$31$

x$32$

x$33$

$()$

$\_\_\_\_\_\_"$