algebra_review - Review for Placement Test To Bypass Math...

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1 Review for Placement Test To Bypass Math 1301 – College Algebra Department of Computer and Mathematical Sciences University of Houston-Downtown Revised: Fall 2009 PLEASE READ THE FOLLOWING CAREFULLY: 1. The bypass test cannot be used by a UHD or transfer student to place out of a course in which the student received a grade of D, F, W, or I. 2. The results of the bypass test are valid only for the current semester. 3. You cannot use a calculator on the bypass test. 4. This review is longer than the bypass test. 5. Answers are at the end of the review. 1. Classify each number. Choose all correct answers. a. : (i) natural number (ii) integer (iii) rational number (iv) real number È * b. : (i) natural number (ii) integer (iii) rational number (iv) real number È # c. : (i) natural number (ii) integer (iii) rational number (iv) real number ## ( d. : (i) natural number (ii) integer (iii) rational number (iv) real number "! 2. For each measured quantity, choose the set of numbers that is most appropriate to describe it. (There is one correct answer for each part.) a. Population of a town: (i) natural number (ii) integer (iii) rational number (iv) real number b. Gallons of gasoline purchased at last fill-up: (i) natural number (ii) integer (iii) rational number (iv) real number 3. Which of the following graphs are functions? i. ii. iii. A. i) only B. iii) only C. i) and iii) D. i) and ii) E. none of these 4. Which of the following graphs are functions? not i. ii. iii. iv.
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2 5. Which of the following relations are functions? i. ii. iii. iv. B! " # $ B!!# $ B!"#$ B ! "## C! " # $ C#&(" " C#### C" !)(( 6. What is the domain of the function ? 0ÐBÑ œ #B  % $B  " 7. What is the domain of the function ? B' È A. B. C. D. E. B ' B' BŸ! BŸ' B! 8. What is the domain of the function ? " ÐB  'ÑÐB  #Ñ 9. What is the domain of the function ? 0ÐBÑ œ B #B$ # 10. Find the domain and range of the function graphed here. A. domain range B. domain range 0 œ Ò!ß $Óß œ Ò"ß &Ó œ Ò!ß $Óß œ Ò#ß &Ó œÒ#ß&Ó ß œÒ!ß$Ó œÒ"ß%Ó ß œÒ$ß'Ó œÐ∞ß∞Ñß œÐ∞ß∞Ñ C. domain range D. domain range E. domain range 11 Þ 0 0Ð!Ñ 0Ð"Ñ 0Ð#Ñ 0Ð$Ñ For the function graphed in Problem 10, determine: i. ii. iii. iv. 12. For the function graphed here, determine: i. ii iii. 2 2Ð"Ñ Þ2Ð!Ñ 2Ð"Ñ 13. Given that , find 0ÐBÑ œ $B& 0Ð+"ÑÞ A. B. C. D. E. $+  % $+  & $+  # $+  ) $+  $ 14. Fill in the blanks: If , then the point ______ ______ lies on the graph of . ;Ð#Þ&Ñ œ $Þ# Ð ß Ñ ;
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3 15. For a person inches tall with a sprained ankle, the length of crutches, in inches, that he or she may need is B approximated by . Evaluate and interpret . 0ÐBÑ œ !Þ*#B  # 0Ð(&Ñ A. A person inches tall needs crutches that are approximately inches long. (& (" B. A person inches tall needs crutches that are approximately inches long. (" (& C. A person inches tall needs crutches that are approximately inches long. (& "%' D. A person inches tall needs crutches that are approximately inches long. (& (& E. none of these 16. Which of the following lines have negative slope?
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This note was uploaded on 07/22/2011 for the course MATH 1310 taught by Professor Dr.lee during the Fall '11 term at University of Houston - Downtown.

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algebra_review - Review for Placement Test To Bypass Math...

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