Solve the problem.The revenue achieved by selling x graphing calculators is figured to be 
The cost of each calculator is 
How many graphing calculators must be sold to make a profit (revenue - cost) of at least $466.20?
A. {x?37 < x < 63}
B. {x?12 < x < 38}
C. {x?39 < x < 61}
D. {x?38 < x < 36}
Answer: A
Mathematics
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