Cost Concepts
Revenue and Profit
Do the Math
Production Function
Real-World Supply
200

These costs stay the same no matter how much is produced, and are also called overhead.

What are fixed costs?

200

Price multiplied by the number of units sold gives this.

What is total revenue?

200

Workers 1, 2, and 3 have marginal products of 5, 9, and 12. Total product is this.

What is 26?

200

This period is long enough for a firm to adjust all of its resources, including capital.

What is the long run?

200

Bad weather ruins coffee crops, so supply shifts in this direction.

What is left?

400

Wages and raw materials are examples of this type of cost.

What are variable costs?

400

This is the most important measure of revenue for businesses.

What is marginal revenue?

400

Price rises from $10 to $12 and quantity supplied rises from 50 to 55. Give the coefficient and the category.

What is 0.5, inelastic?

400

Stage II is known by this name.

What is decreasing, or diminishing, returns?

400

Several gas stations in a small town close. Name the direction and the factor.

What is a shift left, caused by the number of sellers?

600

Total cost equals these two added together.

What are fixed costs and variable costs?

600

Profit equals total revenue minus this.

What is total cost?

600

Price rises from $20 to $25 and quantity supplied rises from 400 to 500. Give the coefficient and the category.

What is 1.0, unit elastic?

600

When a worker’s marginal product is negative, total output does this.

What is falls?

600

New law requires costly emission controls on all cars. Name the direction and the factor.

What is a shift left, caused by government regulations?

800

To find marginal cost, divide the additional cost by this.

What is additional output?

800

Profit is maximized where these two are equal.

What are marginal cost and marginal revenue?

800

Output rises from 90 to 110 units and total revenue rises from $1,350 to $1,650. Marginal revenue per unit is this.

What is $15?

800

SA firm avoids Stage III because of this.

What is workers getting in each other’s way, so total output falls?

800

E-commerce lowers this point by reducing fixed costs.

What is the break-even point?

1000

A firm has $50 in fixed costs and hires 6 workers at $90 each. Its total cost is this.

What is $590?

1000

The next worker’s marginal cost is $22.50 and marginal revenue is $15. Should the firm hire the worker?

What is no, because profit would fall?

1000

Fixed costs are $60, each worker costs $40, and units sell for $8. Three workers make 34 units. Profit is this.

What is $92? Total cost is $180 and total revenue is $272.

1000

Stage II begins with this worker, whose marginal product of 20 is lower than the previous worker’s 28.

What is the 6th worker?

1000

Explain why the supply of nuclear power is inelastic in the short run.

What is that raising output takes engineering, capital, technology, and heavy regulation?

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