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The relationship in the graph above best illustrates the economic concept of A graph in the first quadrant is shown with quantity of output on the vertical axis and units of labor on the horizontal axis. A curve is drawn starting at the origin increasing and concave up, and it then has a point of inflection and becomes increasing and concave down before reaching a maximum and becoming decreasing and concave down. A vertical line is drawn from the horizontal axis at a point labeled A to the point of inflection on the curve, and a vertical line is drawn from the horizontal axis at a point labeled B to the maximum of the curve.

The following questions refer to the graph below showing cost curves for a perfectly competitive firm. A graph in the first quadrant is shown with price on the vertical axis and number of widgets in thousands on the horizontal axis. The vertical axis is labeled from 0 to 16 dollars in increments of 1 dollar, and the horizontal axis is labeled from 0 to 24 in increments of 1. Each labeled value has reference ines, and these lines form a grid across the graph. Two curves are plotted, both concave up everywhere, decreasing on the left before reaching a minimum and increasing on the left. The first curve is labeled average total cost which passes through 10 dollars and 3000 widgets while decreasing to its minimum at 6 dollars and 12000 widgets, then increases to 12.5 dollars and 24000 widgets on the right. The second curve is labeled marginal cost, which is decreasing through the point 6 dollars and 2000 widgets to its minimum 3 dollars and 6000 widgets before increasing to 14 dollars and 19000 widgets. The marginal cost curve intersects the average total cost curve at the minimum of the average total cost curve. At market price $6, the profit-maximizing rate of output will result in

Which of the following best represents a positive externality?

For a perfectly competitive firm producing the profit-maximizing quantity, the average total cost is $10 and the average variable cost is $8. If the market price for its product is $10, which of the following is true for the firm?

When marginal product exceeds average product, which of the following must be true?

A decrease in the supply of oranges raised the price of oranges in the market. The substitution effect of the price increase will motivate consumers to

A collusive agreement to fix prices among firms in an oligopolistic industry is most likely to be broken under which of the following conditions?

Total economic surplus will be maximized at which of the following price and quantity combinations? The figure presents a supply and demand graph of two lines in the first quadrant of a coordinate plane. The horizontal axis is labeled, “Quantity in units,” and There are three quantities indicated on the axis from left to right, Q sub 1, Q sub 2, and Q sub 3. The vertical axis is labeled, “Price,” and there are three prices indicated on the axis from bottom to top, P sub 1 , P sub 2, P sub 3. The first line is labeled Demand, and begins at the top of the vertical axis. The line moves downward and to the right, and passes through the points Q sub 1 comma P sub 3, Q sub 2 comma P sub 2, and Q sub 3 comma P sub 1. The line ends just above the horizontal axis. The second line is labeled Supply, and begins in the lower part of the vertical axis. The line moves upward and to the right, and passes through the points Q sub 1 comma P sub 1, Q sub 2 comma P sub 2, and Q sub 3 comma P sub The line ends far to the right of the vertical axis. There are three horizontal dashed lines on the plane parallel to the X-axis. The first horizontal dashed line starts from the Y-axis at P sub 1 and moves to the right, it passes through the Supply line at point Q sub 1 and P sub 1 and ends at the Demand line at point Q sub 3 and P sub 1. The second horizontal dashed line starts from the Y-axis at P sub 2 and moves to the right and ends at the intersection point of the Demand and Supply lines at point Q sub 2 and P sub 2. The third horizontal dashed line starts from the Y-axis at P sub 3 and moves to the right, it passes through the Demand line at point Q sub 1 and P sub 3 and ends at the Supply line at point Q sub 3 and P sub 3. There are three vertical dashed lines on the plane parallel to the Y-axis. The first vertical dashed line starts from the X-axis at Q sub 1 and moves up till it passes through the Supply line at point Q sub 1 and P sub 1 and ends at the Demand line at point Q sub 1 and P sub 3. The second vertical dashed line starts from the X-axis at Q sub 2 and moves up till ends at the intersection point of the Demand and Supply lines at point Q sub 2 and P sub 2. The third vertical dashed line starts from the X-axis at Q sub 3 and moves up till it passes through the Demand line at point Q sub 3 and P sub 1 and ends at the Supply line at point Q sub 3 and P sub 3. There are six letters on the graph that indicate enclosed. Letter A indicates the area of the triangle below the Demand line and above the third horizontal line. Letter B indicates the area of the rectangle bound by the Y-axis, the third horizontal dashed line, the second horizontal dashed line, and the first vertical line. Letter C indicates the area of the rectangle bound by the Y-axis, the second horizontal dashed line, the first horizontal dashed line, and the first vertical line. Letter D indicates the area of the triangle above the Supply line and below the first horizontal line. Letter E indicates the area of the triangle below the Demand line, above the second horizontal dashed line, and to the right of first vertical dashed line. Letter F indicates the area of the triangle above the Supply line, below the second horizontal dashed line, and the right of first vertical dashed line.

What does the minimum efficient scale measure?

A decrease in the supply of pencils results in which of the following?