Situation

Action

Mathematical Operation

Talks-A-Lot cell phone company charges $0.40 for each international text message sent. How much would Srikanth have to pay for n text messages?

A charge is incurred for each number of text messages.

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The Texas Wildflower Center packages bluebonnet seeds into packages containing 0.4 ounces of seeds each. How many packages can be created from 1 pound of bluebonnet seeds?

A larger quantity is being evenly distributed among smaller containers.

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A cross-country track team needs water bottles for a meet next weekend. The runners will bring 40 bottles, and the coach will bring another 6 bottles. How many bottles will there be altogether?

Two sets of water bottles are combined into a larger set.

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The air pressure inside a tire increases by 7.5 pounds per square inch for each degree Celsius that the temperature rises. If the temperature increases by t degrees, what will be the change in air pressure?

A change of a given amount occurs for each degree of temperature increase.

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An account manager earns $11.75 per hour. Last week, she earned $470. How many hours did she work?

A total amount of money is broken into smaller, equally-sized parts.

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Gladys earns a straight commission of 12% of her total sales. How much will Gladys earn if her total sales are s dollars?

The commission rate is applied to determine the part of the total amount of sales.

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A neighborhood water tank holds 250,000 gallons of water. Last week, 76,318 gallons were consumed. How much water remains in the tank?

Water is removed from an initial amount in the tank.

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