Answer:

Explanation:
Let the length of the rectangle be
units.
We were given that the length is <em>3 less than twice the width.</em>
This implies that: 
We have that the area of this rectangle is 50 square inches.
Recall that area of rectangle is given by:


Therefore the required equation is 
First, convert watts to kilowatts.
500w/1000= .5 kW per hour
.5*4 hours= 2kwh*365 days= 730 kWh
The answer is 730 kwh per year
...of strict social stratification...