Use a proportion to solve the problem.On Hector's bicycle, the ratio of pedal turns to rear-wheel turns in second gear is 4 to 7. If his rear wheel turns 392 times per mile, how many times does he turn the pedal in one mile?
A. 224 times
B. 686 times
C. 396 times
D. 399 times
Answer: A
Mathematics
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is one-to-one on the domain 
. Find 
.
?
A. ?
B. 
C. 
?
D. 
E. 
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? 
A. < B. > C. =
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