The Average Number of Vehicles Waiting in Line at a Toll

question 93

Multiple Choice

The average number of vehicles waiting in line at a toll booth of a super highway is modeled by the function $\mathrm { n } ( \mathrm { x } ) = \frac { \mathrm { x } ^ { 2 } } { 0.5 ( 1 - \mathrm { x } ) }$ , where x is a quantity between 0 and 1 known as the traffic intensity. To the nearest tenth, find the average number of vehicles waiting if the traffic intensity is .81.

• A) 1.6 vehicles
• B) 3.5 vehicles
• C) 6.9 vehicles
• D) 8.5 vehicles

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Definitions:

Working Poor

Individuals who have employment but whose incomes fall below a poverty line due to low wages and/or insufficient working hours.

Single Mother

A woman who parents a child or children without the support of a partner in the household.

Electric Bill

A statement of the cost of electricity consumption for a specific period, typically issued monthly by utility companies to households or businesses.

Feminization Of Poverty

The theory that (1) women are more likely to be low-income earners than men, and (2) the low-income gap between women and men is growing.