Indoor Air Pollution Formaldehyde is an indoor air pollutant formerly found in plywood, foam insulation, and carpeting. When concentrations in the air reach 33 micrograms per cubic foot (μg/ft3), eye irritation can occur. One square foot of new plywood could emit 140 μg per hour. (Source: A. Hines, Indoor Air Quality&Control.)
(a) A room has 100 square feet of new plywood flooring. Find a linear function f that computes the amount of formaldehyde in micrograms that could be emitted in x hours.
(b) The room contains 800 cubic feet of air and has no ventilation. Determine how long it would take for concentrations to reach 33 μg / ft3.
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