2
QuizMultiple Choice
Real-World Applications of Expressions
Question 2 • TX-College Prep Math A
Alan used the expression , where F is a temperature in degrees Fahrenheit, to convert a temperature from Fahrenheit to Celsius. He evaluated the expression as shown below and found that 45 degrees Fahrenheit was equivalent to –7 degrees Celsius. What error did Alan make?
Answer
A
He substituted 45 for F instead of –7 and should have found the answer to be degrees Celsius.
B
He did not combine within the parentheses first before multiplying and should have found the answer to be degrees Celsius.
C
He multiplied 45 by the fraction incorrectly and should have found the answer to be 49 degrees Celsius.D
He divided 5F by 9 before subtracting 32 and should have found the answer to be degrees Celsius.