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11 February, 16:27

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.

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Answers (2)
  1. 11 February, 16:33
    0
    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
  2. 11 February, 16:51
    0
    Step-by-step explanation:

    700 + 85x <== = ur expression
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