suppose a refrigerator sells for $700 per and costs $85 a year for electricity. write the expression for the cost to buy and run
the refrigerator for x years?
2 answers:
Cost of refrigerator = $700
Cost of electricity per year = $85
So cost of electricity for x years = $85x
Run the refrigerator for x years
Total cost to buy and run the refrigerator for x years = cost of refrigerator + cost of electricity for x years
Total cost to buy and run the refrigerator for x years = 700 + 85x
X=700R+85Y
R= Number of Refrigerators
Y= Number of Years
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