Solve the Formula for the Specified Variable $a + b = s + r$

question 189

Multiple Choice

Solve the formula for the specified variable.
- $a + b = s + r$ for $r$

• A) \(r = a + b - s\)
• B) \(r = s ( a + b )\)
• C) \(r = \frac { a } { s } + b\)
• D) \(r = \frac { a + b } { s }\)

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Definitions:

Welfare

Welfare denotes governmental support aimed at ensuring the basic physical and material well-being of people, particularly those in need.

Complete Knowledge

Refers to a hypothetical situation where all participants in a market have full and perfect information about products, prices, and other market conditions.

Marginal

Relating to the change or difference resulting from a slight incremental increase or decrease in a variable's level.

Economic Variable

A measurable quantity that represents a component of economic performance or behavior, such as GDP, unemployment rate, or inflation.