7
QuizMultiple Choice
Adding and Subtracting Matrices — Unit test
Question 7 • NC-Math 4 CR
Rosa earns $12 per hour. In 7.5 hours, she will earn x dollars. Which is a valid proportion that can be used to solve the problem?
Answer
A
StartFraction x over 12 EndFraction = StartFraction 1 over 7.5 EndFraction
B
StartFraction 1 over 12 EndFraction = StartFraction x over 7.5 EndFraction
C
StartFraction 12 over 1 EndFraction = StartFraction x over 7.5 EndFraction
D
StartFraction 12 over 1 EndFraction = StartFraction 7.5 over x EndFraction