When electricity became widely distributed during the early part of the 20th century, state governments regulated the electricity industry as a monopoly. One electric company had the rights to generate and distribute electricity for a city or a certain part of the state. In return, the government laid out a set of rules for what the electric company could and could not do. During the 1990s and early 21st century, many states deregulated electricity. As a result, numerous electric companies can now provide electricity for a particular area. One such company is Lights and Power. To attract customers, Lights and Power is advertising a special Cheapest Electricity in Town! To 1.000 kWh-$0.11 per kWh More than 1,000 to 1.500 kWh-$0.18 per kWh More than 1,500 kWh-$0.25 per kWh No hidden fees! We promise! Amount of Electricity Process Cost ($) (kWh) 700 700(0.11) 77 800 900 1,000 1,100 1,200 1,00010.111 11,200 1.000 0.18) 146 1,300 1.400 1.500 1,600 1.700 1.800 1,900 4. Write an equation to describe the cost (y) of the number of kilowatt-hours of electricity (x) to 1,000 kilowatt-hours. 5. For what domain does your function model the cost of the first 1,000 kilowatt-hours of electricity? 6. Write an equation to describe the cost (c) of the number of kilowatt-hours of electricity (x) from 1,001 to 1,500 kilowatt- hours.

When electricity became widely distributed during the early part of the 20th century, state governments regulated the electricity industry as a monopoly. One electric company had the rights to generate and distribute electricity for a city or a certain part of the state. In return, the government laid out a set of rules for what the electric company could and could not do. During the 1990s and early 21st century, many states deregulated electricity. As a result, numerous electric companies can now provide electricity for a particular area. One such company is Lights and Power. To attract customers, Lights and Power is advertising a special Cheapest Electricity in Town! To 1.000 kWh-$0.11 per kWh More than 1,000 to 1.500 kWh-$0.18 per kWh More than 1,500 kWh-$0.25 per kWh No hidden fees! We promise! Amount of Electricity Process Cost ($) (kWh) 700 700(0.11) 77 800 900 1,000 1,100 1,200 1,00010.111 11,200 1.000 0.18) 146 1,300 1.400 1.500 1,600 1.700 1.800 1,900 4. Write an equation to describe the cost (y) of the number of kilowatt-hours of electricity (x) to 1,000 kilowatt-hours. 5. For what domain does your function model the cost of the first 1,000 kilowatt-hours of electricity? 6. Write an equation to describe the cost (c) of the number of kilowatt-hours of electricity (x) from 1,001 to 1,500 kilowatt- hours.

Linear Algebra: A Modern Introduction

4th Edition

ISBN:9781285463247

Author:David Poole

Publisher:David Poole

Chapter2: Systems Of Linear Equations

Section2.4: Applications

Problem 28EQ

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