Math 017 Materials With Exercises

c)2 a when 3a ,2 a = 92b) 9 a when a 3, 9 a2 18____________________________________________________________________________________Sample Test 1 (Lessons 7-9) Solutions_____________________________________________________________________________________1. a) 9 b) 4 16 32. a) 1 b) −0.23. 8 mmor 8 m 14. 4m5. a) yes, it is a solution b) 32 is not a solution1 77. a) x b) x 3 558. a) b b) x 2 c) x 23d) no solution e) all real numbers2 3b19. a) x 2b b) x c) x a 1 a6. a) −2 b) 3.410. a) 16 b) 16 c) −64_____________________________________________________________________________________Sample Test 2 (Lessons 7-9) Solutions_____________________________________________________________________________________11. a) b) 422 16. a) y b) x c) a 102. a) 11 b) 43 32 2a 3 a 2a1d) x 2 e) all real numbers f) 153. a)b)3ab b 14. 3(x 2) 3x 4 ; equation7. a) d c2 c b) d c) d 1a b5x ; expressionx 28. a) no, not a solution b) yes, it is a solution5x 7 8 ; equation 2+3 = 5 equationc) yes, it is a solution5. a) y 1 b) y 09. a) no, not a solution b) no, not a solution_____________________________________________________________________________________Sample Test 3 (Lessons 7-9 ) Solutions_____________________________________________________________________________________163 3c) it is a solution set1. a) b) c)38 87. a) x 30 b) x 0 c) no solution2. a) −0.4 b) −0.12d) x 2e) x 23. no, not a solution8. x 04. a) x 2 2 3 b) 6x 4xb3 a9. a) x b) x 3d c) x 25. a) 3taa c6. a) it is a solution set b) it is a solution set_____________________________________________________________________________________Sample Test 1 (Lessons 10-11) Solutions_____________________________________________________________________________________3. a) x 2 1. x ≥ − 13b) x 3 c)2.10 9 x ≥ 3 and satisfy this inequalityy6. a)3 3 8 y 3 ; A y 2 24. p = 35. x 7 x ( 7); p 7x 11 8Sample Tests Solutions 143