162 Chapter 2 Linear Equations and Inequalities in One Variable GRAPHING CALCULATOR SKILLS There are no new calculator skills needed for this section. �� ���������������� �������� EXERCISE SET Write About It! Use complete sentences to explain the meaning of each term. 1. Percent 2. Simple interest 3. Mixture applications Determine if each statement is true or false. If a statement is false, explain why. 4. The price of an item increased from $50 to $75. To find the percent increase, we must compute 75 - 50 75 . 5. If $6000 is split between two different investments, we can represent the two investment amounts as x and x – 6000. 6. James and Terry live 300 mi apart. They leave their homes at the same time traveling toward one another. James travels at 60 mph, and Terry travels at 72 mph. To find the time when James and Terry meet, we solve the equation 300 60 = x 72 for x. Practice Makes Perfect! Solve each problem involving percents. Round answers to two decimal places, if needed. (See Objective 1.) 7. A computer store has a deal on a notebook computer. The computer is on sale for $699.99. This is 20% off the original price. What is the original price of the computer? 8. A suit is on clearance at a department store for $60. If this price is 75% off the original price, what is the original price of the suit? 9. A digital camera with a printer dock is regularly priced at $329.99. The camera is on sale for 15% off the regular price. What is the sale price of the camera? 10. A leather sofa is regularly priced at 999.99. The furniture store is running a sale in which all furniture is 20% off. What is the sale price of the sofa? 11. A campus bookstore sells a graphing calculator for $104. This is a 30% markup on the cost the bookstore pays for the calculator. What does the bookstore pay for the calculator? 12. The price of an MP3 player is $200. This is a markup of approximately 122% from the actual cost to make the player. What is the cost to make the MP3 player? 13. The price of a luxury car plus 7% sales tax is $45,582. What is the price of the car without tax? 14. Real estate commission is a percentage of the selling price of a house that is paid to realtors for services rendered. Michael is a real estate agent assisting a family in buying a new home. If Michael’s commission rate is 7% of the selling price of the home and his total commission is $13,020, what is the selling price of the home? 15. Selena receives a 5% raise at work, making her salary $31,500. What was her salary before the raise? 16. Raj receives a 4% raise at work. He now makes $15.60 per hour. What was his hourly wage before the raise? The pie chart shows a suggested breakdown for one’s monthly income. Use the pie chart to answer each question. Housing 35% Transportation 15% Debt 15% Other Living Expenses 25% Savings 10% Source: www.oprah.com 17. The Donnellys’ monthly income is $5000. According to the pie chart, what should they spend on their housing each month? 18. The Andersons’ monthly income is $4200. According to the pie chart, what should they spend on their transportation each month? 19. Sonja is a single mom and is trying to save money. If she saves $250 each month, what should her monthly income be according to the pie chart? 20. If Brandon spends $550 each month on other living expenses, what should his monthly income be according to the pie chart? According to a national education organization, the average time it takes for students to complete their bachelor’s degrees varies based on the type and number of colleges they attend, as shown in the following table. Use this information for Exercises 21 and 22. Students attending only one institution 51 months Students attending two institutions 59 months Students attending three or more institutions 67 months Students beginning at public 2-yr colleges 71 months Students attending only one private institution 51 months Students attending only public 4-yr colleges 55 months $999 99 Th
hendricks_beginning_algebra_1e_ch1_3
To see the actual publication please follow the link above