An Energy Star air conditioner unit costs $300 while a standard unit costs $200. The two units have the same cooling capacity. The Energy Star unit costs 5 cents per hour less to run. If you
buy the Energy Star unit and run it for 12 hours per day for 6 months of the year, how long does it
take to recover the $100 extra cost?

Why did the strike at the pullman plant in chicago become a nationwide strike?

Atown located beside a river derives a large percentage of its revenues each year from the local logging industry. however, heavy traffic to and from the logging sites has increased pollution and contributed to soil erosion. this has also resulted in the loss of native bird species in the logged forests. which of the following is the most sustainable solution to this problem? protecting certain forested areas to allow the birds to recover relocating the equipment and vehicles to new forests for logging relocating the birds to new forests away from the town introducing new bird species to replace the species that have been lost reducing the number of trucks traveling through the forest by 10 percent

Is made of materials that are poor conductors, such as glass, plastic, or rubber. they are used in an attempt to keep an electrical current within safe boundaries. for example, the plastic coating on an electrical wire is and is designed to keep the electricity in the wire