Write a system of equations for the problem and then solve using any method you have studied. Sonya needs to purchase a new refrigerator. Model A costs $1,020 to purchase and $31 in electricity per year to operate. Model B costs $1,210 to purchase but costs only $27 in electricity per year to operate. After how many years will the total cost of both units be equal?
A. 
years
B. 
years
C. 
years
D. 
years
E. 
years
Answer: A
Computer Science & Information Technology
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