Acars radiator should contain a solution of 50% antifreeze. bae has 2 gallons of 35% antifreeze. how many gallons of 100% antifreeze should he add to his solution to produce a solution of 50% antifreeze

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

The surface area of the triangular prism is .

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