The willingness to pay for a new neighborhood playground is shown in the table. The marginal cost of providing the playground is MC = 300 + 0.5Q, where Q is square feet. What is the efficient quantity of the good? 
Definitions:
New Skills
Abilities and competencies acquired through training or experience that are essential for performing new tasks or duties.
Situational Constraints
Are external factors or conditions that limit or restrict individuals' ability to achieve a task or an objective.
Sufficient Funds
Having enough money or resources available to cover expenses or investments required.
Negative Attitude
A personal stance or feeling towards an object, person, or situation that is unfavorable or adverse.
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