Find the limit, if it exists.Otherwise, answer no solution. 
Definitions:
Total Variable Costs
The sum of expenses that vary directly with the level of production or sales volume.
Drones
Unmanned aerial vehicles (UAVs) operated by remote control or autonomous software, used for various purposes including photography, surveillance, and delivery.
Total Variable Costs
The expenses that change in proportion to the activity of a business.
Drones
Unmanned aerial vehicles used for a variety of purposes including surveillance, delivery, agriculture, and photography.
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