ive been stuck on this PLEASE help-- how do I find marginal cost?


this is my assignment:

What is the marginal cost of nitrogen in our example when nitrogen is priced at 25 cents a pound vs. if it was 35 cents a pound?

ive been stuck on this PLEASE help how do I find marginal costthis is my assignmentWhat is the marginal cost of nitrogen in our example when nitrogen is priced class=
ive been stuck on this PLEASE help how do I find marginal costthis is my assignmentWhat is the marginal cost of nitrogen in our example when nitrogen is priced class=