Student Worksheet
At 60 widgets, adding 20 more costs 40 gadgets, while the first 20 widgets cost only 10, and that climbing price is why the curve bows outward. The table behind those numbers runs from 100 gadgets with no widgets to 80 widgets with none. A company making smartphones and laptops faces the same math, and an economy choosing between cars and computers sets up the idea at the start.

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