Barbara is converting 78 times degree F to degrees Celsius. First, she subtracts 32 from 78 What is the next step?
Answer
A
add 273 to 46
B
multiply 46 by 5 ninths
C
multiply 46 by 9 fifths
D
subtract 273 from 46
Explanation
After subtracting 32 from 78°F, she has 46. The Fahrenheit-to-Celsius formula is C = (F − 32) × 5/9, so the next step is to multiply 46 by 5/9. That is choice D.
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