



 
Hey Carol, Let x=# of frames sold
Carol, I would use Melanie's equations but solve
This will give you the number of frames sold if the revenue and cost are exactly the same. The solution probably won't be an integer. If you round up to the next integer to find the minimum number of frames Frank must make and sell in order for his revenue to be greater than his costs. Penny  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 