Multiple choice

In a temperature scale called Z, the boiling point of water is at 65oZ and the freezing point is at - 14oZ. Then the temperature T = - 98oZ corresponds on the Fahrenheit scale to

    • 159oF
    • 363oF
    • 223oF
    • 427oF
    • 72oF
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A Correct answer
Explanation

 Z = -98 0 {Z – (- 14)}/{65 – (- 14)} = (F - 32)/180 (- 98 +14)/(65 + 14) = (F - 32)/180 - 84/79 = (F - 32)/180 (- 84/79) x 180 = (F- 32) - 191 + 32 = F F =  - 1590F

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