Question

The label on the car's antifreeze container claims to protect the car between −40°C and 125°C. To convert Celsius temperature to Fahrenheit temperature, the formula is C = 5 over 9 (F − 32). Write and solve the inequality to determine the Fahrenheit temperature range at which this antifreeze protects the car. (2 points)

Answer 1

Answer:

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Answer 2

Given

Between -40°C and 125°C

°C = 5/9 * (°F-32)

°C ÷ 5/9 = °F - 32

°C * 9/5 + 32 = °F

°F = -40°C * 9/5 + 32 = -360/5 + 32 = -72 + 32 = -40°F

°F = 125°C * 9/5 + 32 =  1125/5 + 32 = 225 + 32 = 257°F

−40 < 5 over 9 (F − 32) < 125; −40 < F < 257