Point D on the graph is the point có là to take a semester off Decision
cả studying and working from.
If student spends 4 semesters 4 semesters studying and working, he can earn 60 credit
hours and can wash 3,200 cars (point C). Tuy nhiên, he has made a Decision of taking a
semester off from studying and working both Show and if he spends one semester doing nothing
thay studying, for example, the number of credit hours from 60 to 45 Decrease sẽ
while the number of car washed Remains the same, mà hiển by point D.
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