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15 May, 14:25

Peter wants to use 75-watt lightbulbs and other electronics in his tree house. He has one outlet with a maximum of 900 watts. Which expression represents how much wattage remains if n is the number of lightbulbs turned on?

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  1. 15 May, 14:55
    0
    Expression is 900 - 75n

    Step-by-step explanation:

    Step 1: Maximum watts that can be used is 900W. Find amount of watts used by n light bulbs.

    ⇒ Watts used by n light bulbs = 75 * n = 75n

    Step 2: To find the remaining amount of wattage, subtract the maximum possible W and the watts used by the light bulbs.

    ⇒ 900 - 75n
  2. 15 May, 15:07
    0
    900-75n
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