A Solar Oven Uses a Parabolic Reflector to Focus the Sun's

question 224

Multiple Choice

A solar oven uses a parabolic reflector to focus the sun's rays at a point 5 inches from the vertex of the reflector (see figure) . L = 5 inches
Write an equation for a cross section of the oven's reflector with its focus on the positive y axis and its vertex at the origin.

• A) \(y = \frac { 1 } { 5 } x ^ { 2 }\)
• B) \(y = 5 x ^ { 2 }\)
• C) \(y = 20 x ^ { 2 }\)
• D) \(x ^ { 2 } = 20 y\)
• E) \(x ^ { 2 } = 5 y\)

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Definitions:

Price Elasticity

The determination of how price alterations influence the market demand for a commodity.

Marginal Value

The additional satisfaction or utility received by consuming one more unit of a good or service.

Consumer's Demand

The desire of purchasers, users, or consumers for specific goods or services at a given price over a specified period.

Substitution Effect

The economic principle that as prices rise or incomes decrease, consumers will replace more expensive items with less costly alternatives.