alleryStart learning →Celsius temperature C satisfies 20 ≤ C ≤ 30 and F = 9C/5 + 32. What is the range of F?
A68 ≤ F ≤ 86
B36 ≤ F ≤ 54
C68 ≤ F ≤ 78
D52 ≤ F ≤ 62
Answer & Solution
Correct answer: A. 68 ≤ F ≤ 86
Multiplying by 9/5 gives 36 to 54, and adding 32 gives 68 ≤ F ≤ 86.
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