Andrea's fish tank holds 30 gallons of water. Andrea estimates that every inch of a fish's length requires a gallon of water. She wants to purchase some corydoras that are 2 inches long, angelfish that are 5 inches long, and fancy guppies that are 3 inches long. Write an equation for the situation.

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2x + 5y + 3z = 30 ..would that be it?

Is there a question... like "can the water fit in the tank?" ?

No :/ it just says to use the info to write an equation.

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