Practice - McGraw-Hill Higher Education

11-2NAME______________________________________________ DATE______________ PERIOD _____PracticeRational ExpressionsState the excluded values for each rational expression.4n 28p a1. 2. 2 163.2 2a 15 n 2 49p 2 13p 36a 2 8a 15Simplify each expression. State the excluded values of the variables.12a6xyz4. 5. 336m6.3 np 2 48a33x 2 y 2 z20m 2 np 55c p7. 3 d8.2 8p 12440cd 2 5c 4 d 2 p 2m m 39. 2 4m 1210. m 6 m 2 92b 14x11. 12.2 7x 10b 2 9b 14x 2 2x 15y r13. 2 6y 1614.2 7r 6y 2 4y 4r 2 6r 7t r15. 2 8116.2 r 6t 2 12t 27r 2 4r 122x 2y17. 2 18x 3618.2 9y 43x 2 3x 364y 2 4y 3ENTERTAINMENT For Exercises 19 and 20, use the following information.Fairfield High spent d dollars for refreshments, decorations, and advertising for a dance. Inaddition, they hired a band for $550.19. Write an expression that represents the cost of the band as afraction of the total amount spent for the school dance.20. If d is $1650, what percent of the budget did the band account for?PHYSICAL SCIENCE For Exercises 21–23, use thefollowing information.Mr. Kaminksi plans to dislodge a tree stump in his yard byusing a 6-foot bar as a lever. He places the bar so that 0.5 footextends from the fulcrum to the end of the bar under the treestump. In the diagram, b represents the total length of the barand t represents the portion of the bar beyond the fulcrum.21. Write an equation that can be used to calculate themechanical advantage.22. What is the mechanical advantage?23. If a force of 200 pounds is applied to the end of the lever, what is the force placed on thetree stump?bfulcrumttree stumpCopyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.Chapter 11 16 Glencoe Algebra 1