Question

alright.. this is the question i got..
JJ Manufacturing has three factories (1,2,3) and three distribution centers (A,B,C). shipping costs from the factories to the distrubution centers is as follows

from factory 1 to center A: $6
from factory 2 to center A: $8
from factory 3 to center A: $11

from factory 1 to center B: $5
from factory 2 to center B: $10
from factory 3 to center B: $14

from factory 1 to center c: $3
from factory 2 to center A: $8
from factory 3 to center A: $18

production capability of fact 1 = 6000
production capability of fact 2 = 8000
production capability of fact 3 = 10000

demand at distributtion center A = 7000
demand at distributtion center B = 12000
demand at distributtion center C = 5000

the product is is produced and deliverd in a lot size of 100


im at a total blank at how to write the objective function and contraints. can u please help me with this ASAP :)