E-Book Overview
In this breakthrough text, authors Holtfrerich and Haughn speak as teachers, offering passionate yet patient emphasis on concepts, but not at the expense of teaching algebraic skills. The authors build on and connect topics by discussing the concepts with students in a unique yet logical way. Speaking to students as if they were having a discussion with them in the classroom, the authors use common, everyday applications that make sense to the average student to demonstrate concepts. The authors' approach about where and when topics should be covered is unique, as is the capstone chapter on Modeling/Data Analysis.
E-Book Content
Data Used in the Book A Advertising, 458 Airline Passengers, 560 Airports, 530, 541 Alcohol Abuse, 541 Alcohol Impairment, 99 Alternative Fuel Vehicles, 510 Amtrak, 563 Army on Active Duty, 540 Average Race Car Speeds, 205 Average Temperatures, 106 B Baseball, 291 Beginning Salary, 523 Births, 207, 208 C Cable Subscriptions, 473 Car Accidental Deaths, 342 Carbon Dioxide Emissions, 205 Car Rental, 503 Cigarettes, 558 City Populations, 458 Cliff Diving, 234 Computer Parts, 559 Corporate Receipts, 540 Cost of Lead, 510 Crimes, U.S, 540 D DJIA High Each Decade, 552 DJIA Low Each Decade, 551 Dow Jones Industrial Average, 103 E Eggs, 527 Energy Consumption, 500 Exchange Rates, 175 F Family Income, 559 Federal Expenditures, 541 Federal Income Tax, 128 Federal Income Tax Filings, 564 Freight Cars, 542 G Generals’ Pay, 541 Governmental Expenditures, 564
H Hair Salon, 567 Half-Life, 465, 466, 467 Half-Life Barium, Cobalt, PotassiumArgon, 461, 462, 463 Health Care, Lack of, 539 Health Care Coverage, Age 45–64, 539 High School Diplomas, 207 HIV Death Rates, 540 Home Construction, 116 Home Depot Stores, 558 Hospital Care Expenses, 542 Households, 802* Housing Occupancy, 804* I Immigration, 112 Infant Mortality Rate, 510 In-State Tuition Room and Board, 495 Intel Chip Speed, 560 L Life Expectancy, 540 Life Insurance, 542 M Male Labor Force, 565 Marital Status, 545 Marijuana Use, 541 May Flies, 529 Medicare, 563 Mortgage Rates, 104 N National Debt, 113 National Income, 564 Number of Earthquakes, 205 O Ozone, 460 P Passenger Carriers, 542 Payroll, 542 Personal Income, 527, 566 Population Growth, 469 Population of Arizona, 787* Population of China, 560 Population of Pakistan, 566 Population of U.S.A. by Age, 786*
*These data problems appear only in College Algebra, 1/e.
Population Members of HMOs, 543 Presidential Elections, 116, 132 Prisoners, 113 Prisons, 543 R Radio Stations, 558 Registered Voters, 586, 587 Revenue for Public Schools, 511 Robberies, 112 S Salaries of General Business Graduates, 287 Salaries of Public School Teachers, 559 SAT Math Scores, Female Seniors, 557 SAT Math Scores, Seniors, 557 School Expenditures, 115 School Population, 114 Skim Milk Consumption, 474 Social Security, 527 Soldiers’ Chest Sizes, 543 Sperm Whales, 390 Starbucks Stores, 558 Stock, Exxon Mobil, 146 Stock, Wal-Mart, 147 Stock Market, 536 Student Enrollment in Two-Year Colleges, 105 Students Passing College Algebra, 212 Superintendent Salaries, 558 T Talk Radio, 557 Taxes, 558 Temperatures, 133 Total Energy Consumption, 756* Tuition and Fees, Private Colleges, 511 Tuition Fees, State Colleges, 382 TV and Radio Repairs, 511 V Value of a Dollar, 206 W Western Radio Stations, 564 Women Aged 18-24 Living at Home, 212 World Population, 382
How to Solve Equations (Processes) n
Linear ( x1, highest-degree term) 1. Distribute to clear parentheses. 2. Eliminate fractions (LCD) and decimals. (Multiply by 10n.) 3. Collect like terms on both sides of the equation. 4. Get variable terms together. 5. Get constant terms together on the other side of the equation than the variable term. 6. Multiply or divide by the coefficient on the variable term to get 1x Answer.
Root ( 1 x, variable in a ro