Ventilation requirements Ventilation is an effective way to improve indoor air quality. In nonsmoking restaurants, air circulation requirements (in ft/min) are given by the func- tion V(x) = 35x, where x is the number of people in the dining area. (a) Determine the ventilation requirements for 23 people. (b) Find V-(x). Explain the significance of V-1. (c) Use V-1 to determine the maximum number of people that should be in a restaurant having a ventilation capa- bility of 2350 ft'/min.

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