Concept explainers
Find the required ventilation rate when there are 300 cubic feet of air space child.

Answer to Problem 21PS
The minimum require ventilation rate for 300 cubic feet of air space per child is 17.7ft3/min
Explanation of Solution
Given:
The model y=80.4−11lnx,100≤x≤1500 which approximates the minimum required ventilation rate in terms of the air space per child in a public-school classroom. In the model, x is the air space per child in cubic feet and y is the ventilation rate per child in cubic feet per minute.
The model y=80.4−11lnx,100≤x≤1500 which approximates the minimum required ventilation rate in terms of the air space per child in a public-school classroom. In the model, x is the air space per child in cubic feet and y is the ventilation rate per child in cubic feet per minute.
Evaluate the minimum required ventilation rate by putting 300 cubic feet of air space per
child in the model,
y=80.4−11ln(300)y=17.7ft3/min
"Hence, minimum require ventilation rate for 300 cubic feet of air space per child is 17.7ft3/min
Chapter 3 Solutions
EBK PRECALCULUS W/LIMITS
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