1. You are introduced to three ways to add vectors, list them. What method do you think is the most accurate? And what method do you prefer to use? 2. What factors do you think might affect each of the three methods? 3. What does equilibrium mean?

An electric power distributor charges residential customers $0.10 per kilowatt-hour (kwh). the company advertises that "green power" is available in 150 kwh blocks for an additional $4 per month. (green power is generated from solar, wind power, and methane sources.) if a certain customer uses an average of 391 kwh per month and commits to one monthly 150 kwh block of green power, what is her annual power bill