Practice - McGraw-Hill Higher Education

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2-9NAME______________________________________________ DATE______________ PERIOD _____PracticeWeighted AveragesGRASS SEED For Exercises 1–4, use the following information.A nursery sells Kentucky Blue Grass seed for $5.75 per pound and Tall Fescue seed for$4.50 per pound. The nursery sells a mixture of the two kinds of seed for $5.25 per pound.Let k represent the amount of Kentucky Blue Grass seed the nursery uses in 5 pounds ofthe mixture.1. Complete the table representing the problem.Number of Pounds Price per Pound CostKentucky Blue GrassTall FescueMixture2. Write an equation to represent the problem.3. How much Kentucky Blue Grass does the nursery use in 5 pounds of the mixture?4. How much Tall Fescue does the nursery use in 5 pounds of the mixture?Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.TRAVEL For Exercises 5–7, use the following information.Two commuter trains carry passengers between two cities, one traveling east, and the otherwest, on different tracks. Their respective stations are 150 miles apart. Both trains leave atthe same time, one traveling at an average speed of 55 miles per hour and the other at anaverage speed of 65 miles per hour. Let t represent the time until the trains pass each other.5. Copy and complete the table representing the problem.First TrainSecond Trainr t d rt6. Write an equation using t that describes the distances traveled.7. How long after departing will the trains pass each other?8. TRAVEL Two trains leave Raleigh at the same time, one traveling north, and the othersouth. The first train travels at 50 miles per hour and the second at 60 miles per hour.In how many hours will the trains be 275 miles apart?9. JUICE A pineapple drink contains 15% pineapple juice. How much pure pineapple juiceshould be added to 8 quarts of the drink to obtain a mixture containing 50% pineapplejuice?Lesson 2-9Chapter 2 67 Glencoe Algebra 1
Alg1 CH03 EP73-1NAME______________________________________________ DATE______________ PERIOD _____PracticeRepresenting RelationsExpress each relation as a table, a graph, and a mapping. Then determine thedomain and range.1. {(4, 3), (1, 4), (3, 2), (2, 3), (2, 1)}Express the relation shown in each table, mapping, or graph as a set of orderedpairs. Then write the inverse of the relation.2. 3. XY4.x y0 98 32 61 4Oy9648x5537OyxLesson 3-1Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. 873946BASEBALL For Exercises 5 and 6, use the graph thatshows the number of homeruns hit by Andruw Jones ofthe Atlanta Braves.5. Find the domain and estimate the range.6. Which seasons did Jones have the least and greatestnumber of homeruns?METEORS For Exercises 7 and 8, use thetable that shows the number of meteorsAnn observed each hour during ameteor shower.7. What are the domain and range?8. Graph the relation.Time(A.M.)Number ofMeteors12 151 262 283 284 15Andruw Jones’ HomerunsHomeruns3634323028260Number of Meteors’99 ’00 ’01 ’02 ’03 ’04 ’05Year30252015100Meteor Shower12–11–22–33–44–5Time (A.M.)Chapter 3 9 Glencoe Algebra 1
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Practice - McGraw-Hill Higher Education

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