Solve.ABC phone company charges $25 per month plus  per minute for phone calls. XYZ phone company charges $15 per month plus 6¢ per minute for phone calls. How many minutes of phone calls should be made each month to make XYZ phone company a better deal?

A. Less than 50 minutes
B. More than 500 minutes
C. Less than 500 minutes
D. More than 50 minutes


Answer: C

Mathematics

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Find the derivative of the function.y = 

A.  =  - 
B.  =  + 
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