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February 21st, 2009, 11:49 AM  #1 
Newbie Joined: Feb 2009 Posts: 2 Thanks: 0  CAN SOMEBODY HELP SOLVE THIS PROBLEMS PLEASE
A radio manufacturing firm has fixed cost of $25.000 cost and variable cost of $75.80 per radio. The radio sells for $119.95 Write an expression for the profit funciton and find the number of radios that must be sold to break even. If money is invested at 9%, what is the effective anual rate if the investment is compounded a) quarterly? b) monthly? c) daily? d) countinesly? 
February 21st, 2009, 06:02 PM  #2 
Global Moderator Joined: Dec 2006 Posts: 20,278 Thanks: 1963 
What progress have you made so far?


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