Use the Following to Answer Question

question 41

Multiple Choice

Use the following to answer question:
-(Table: Variable Costs for Lawns) Use Table: Variable Costs for Lawns.During the summer,Alex runs a lawn-mowing service,and lawn-mowing is a perfectly competitive industry.Assume that costs are constant in each interval;so,for example,the marginal cost of mowing each of the lawns from 1 through 10 is $10.Also assume that he can only mow the quantities of lawn given in the table (and not numbers in between) .His only fixed cost is $1,000 for the mower.His variable costs include fuel,his time,and mower parts.If the price for mowing a lawn is $40,how much is Alex's total revenue at the profit-maximizing output?

• A)$1,000
• B)$1,200
• C)$500
• D)$1,500

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Definitions:

Iris Diaphragm

A component of optical devices, such as microscopes and cameras, that can adjust the size of the aperture to control the amount of light that passes through the lens.

Oil Immersion

A technique used in microscopy where an oil with a refractive index close to that of glass is placed between the specimen and the objective lens to increase resolution.

Coverslip

A very thin piece of glass or plastic used to cover specimens on a microscope slide for examination.

Opaque

Describing a material or substance that does not allow light to pass through; not transparent or translucent.