Test+1+Review

# Test+1+Review - 1 Y 2 etc 10 8x 3> 3(2x 1 x 5 11 3 ≤ 4x...

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College Algebra – GC Ann Triplett Review for Test 1 1–7 Solve these equations either manually or using your graphing calculator (GC). If you choose to solve manually, be sure to show all of your work. If you use the GC, be sure to show what you entered as Y 1 , Y 2 , etc. . 1. 3(x – 4) – 4(x – 3) = x + 3 – (x – 2) 2. 2 1 1 2 x x x x - + + = 3. 9x 2 + 9x + 2 = 0 4. 2x 2 – 7 = –15 5. 6 1 1 x x + = - (be sure to check your solutions if you do this without the GC!) 6. x 4 – 13x 2 = –36 7. │x + 1│ + 6 = 2 8. One number exceeds another by 26. The sum of the numbers is 64. What are the two numbers? 9. Solve V = π r 2 h for h 10-13 Solve these inequalities. Give your answer in interval notation. You may solve manually (show all work!) or using the GC (show what you are assigning to Y

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Unformatted text preview: 1 , Y 2 , etc.) 10. 8x + 3 > 3(2x + 1) + x + 5 11. 3 ≤ 4x – 3 < 19 12. │3x + 5│ < 17 13. 5│2x + 1│- 3 ≥ 9 14.20 Simplify 14. (-4 - 7 i ) – (-3 – 15 i ) 15. -3 i (2 i – 9) 16. (-3 – 5 i )(2 + 4 i ) 17. (3 + 3 i ) 2 18. 4 2 i--19. 2 9 5 2 i i +-20. 64 9-+ -Answers to Review Questions – Test 1 1. x = -5 2. x = 4 3. x = -2/3, -1/3 4. no solution 5. x = 8 6. x = -3, -2, 2, 3 7. no solution 8. larger number 45, smaller number 19 ` 18. 8 4 5 5 i--9. h = V/(πr 2 ) 10. (5,∞) 19. 8 49 29 29 i-+ 11. [1.5,5.5) 12. (-7 ,4) ⅓ 20. 11 i 13. (-∞,-1.7] U [.7, ∞) 14. -1 + 8 i 15. 6 + 27 i 16. 14 - 22 i 17. 18 i...
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## This note was uploaded on 09/22/2008 for the course MATH 1314 taught by Professor Manjong during the Spring '08 term at Tarrant County.

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Test+1+Review - 1 Y 2 etc 10 8x 3> 3(2x 1 x 5 11 3 ≤ 4x...

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