Answer :
C = 4500 + 150s
4500 is fixed, so what remains is just 150$ per ton of sugar (so 150 x s)
If we substitute 12 for s we get:
C = 4500 + 150*12
C = 6300
4500 is fixed, so what remains is just 150$ per ton of sugar (so 150 x s)
If we substitute 12 for s we get:
C = 4500 + 150*12
C = 6300