



 
Hi Jora, Suppose that an LCD TV sells for L dollars and a Plasma TV sells for P dollars. In December John's income was then \[10 L + 20 P = 12800 \mbox{ dollars}\] Write the equation for his income in in January. Solve the equations for L and P. What is John's expected income in February? After paying his expenses in February how much id he make in February? Penny
 


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