Solve the problem.The revenue achieved by selling x graphing calculators is figured to be 
dollars. The cost of each calculator is 
How many graphing calculators must be sold to make a profit (revenue - cost) of at least $630.00?
A. {x ? 30 < x < 42}
B. {x ? 31 < x < 41}
C. {x ? 39 < x < 51}
D. {x ? 32 < x < 40}
Answer: A
Mathematics
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> 14
A. {x
}
B. {x
}
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D. {x
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The manager of a 100-unit apartment complex knows from experience that all units will be occupied if the rent is $650 per month. A market survey suggests that, on the average, one additional unit will remain vacant for each $20 increase in rent. What rent should the manager charge to maximize revenue?
What will be an ideal response?
Mathematics