Is this model correct based on the information provided?

My model:

SunNet Flow From To Cost Node Net Flow Supply/Demand 30.0 6 $6.50 -30 -30 0.0 7 $7.50 2 -40 -40 30.0 6 $7.00 3 -25 -25 10.0 7 $8.00 -35 -35 0.0 6 $8.25 -33 -33 . - - 25.0 $7.45 60 60 - - - 0.0 8 $6.75 63 70 0.0 $7.75 40 40 35.0 $7.00 28.0 7 $7.50 5.0 8 $6.75 Total Cost $1, 160.00SunNet Flow From To Cost Node Net Flow Supply/Demand 1 6 $6.50 -30 $7.50 -40 6 $7.00 -25 $8.00 -35 6 $8.25 -33 $7.45 60 $6.75 70 $7.75 40 8 $7.00 7 $7.50 8 $6.75 Total Cost