Q:

Peter wants to use 75-watt light bulbs 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 light bulbs turned on?900(75n)825 – n900 – 75n900/n

Accepted Solution

A:
It should be 900 - 75n

900 is the initial and you’re finding how much remains so there should be some subtraction required

In addition, n is # light bulbs and 75 is watt per light bulb

U subtract 75watts per bulb from the initial of 900 watts to find the remaining wattage.