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Suppose a refrigerator that sells for$700 costs $85 a year for electricity. Write an expression for the cost to buy and run the refrigerator for x years.

Respuesta :

msowders1998
first refrigerator cost

C(x1)=700+85x
C(10)= 700+850
C(10)= 1550

refrigerator 2nd

C(x2) = 1000+25x
C10) =1000+250
C(10)=1250
Now you know it.
same cost

700+85x=1000+25x
60x=300
x= 5 years
texaschic101

Answer:

Step-by-step explanation:

700 + 85x <=== ur expression

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