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Study Guides > College Algebra

Solutions

Solutions to Try Its

1. [latex]\frac{128}{3}\\[/latex] 2. [latex]\frac{9}{2}\\[/latex] 3. x = 20

Solutions to Odd-Numbered Exercises

1. The graph will have the appearance of a power function. 3. No. Multiple variables may jointly vary. 5. [latex]y=5{x}^{2}\\[/latex] 7. [latex]y=10{x}^{3}\\[/latex] 9. [latex]y=6{x}^{4}\\[/latex] 11. [latex]y=\frac{18}{{x}^{2}}\\[/latex] 13. [latex]y=\frac{81}{{x}^{4}}\\[/latex] 15. [latex]y=\frac{20}{\sqrt[3]{x}}\\[/latex] 17. [latex]y=10xzw\\[/latex] 19. [latex]y=10x\sqrt{z}\\[/latex] 21. [latex]y=4\frac{xz}{w}\\[/latex] 23. [latex]y=40\frac{xz}{\sqrt{w}{t}^{2}}\\[/latex] 25. [latex]y=256\\[/latex] 27. [latex]y=6\\[/latex] 29. [latex]y=6\\[/latex] 31. [latex]y=27\\[/latex] 33. [latex]y=3\\[/latex] 35. [latex]y=18\\[/latex] 37. [latex]y=90\\[/latex] 39. [latex]y=\frac{81}{2}\\[/latex] 41. [latex]y=\frac{3}{4}{x}^{2}\\[/latex] Graph of y=3/4(x^2). 43. [latex]y=\frac{1}{3}\sqrt{x}\\[/latex] Graph of y=1/3sqrt(x). 45. [latex]y=\frac{4}{{x}^{2}}\\[/latex] Graph of y=4/(x^2). 47. 1.89 years 49. 0.61 years 51. 3 seconds 53. 48 inches 55. 49.75 pounds 57. 33.33 amperes 59. 2.88 inches

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