Precalculus

Answers Chapter 4 Review A-2721.Largest absolute error: 0.07Sum of the absolute errors: 0.22Little Rock: 4.6 feet/secondNew York: 5.9 feet/secondMexico City: 6.2 feet/second23. False 25. TrueChapter 4 Review, page 3601.v 0.81log P 0.3P Actual data v 0.81log P 0.3 Absolute error5,500 3.3 3.33 0.0314,000 3.7 3.66 0.0471,000 4.3 4.23 0.07138,000 4.4 4.46 0.06342,000 4.8 4.78 0.02a.b.c.54321–2–3–4–5g(x) = 2 –xy54321–2–3–4–554321–2–3–4–554321–5–4–3 –2 –1 1 2 3 4 5–2–3–4–5yy–5–4–3 –2 –1 1 2 3 4 5yf(x) = 2 x–5–4–3 –2 –1 1 2 3 4 5–5–4–3 –2 –1 1 2 3 4 5xg(x) = 2 x + 2xxg(x) = 2 x + 1 x13. x 3 5. x 1 7. 2 9. 2 11.2213. 2 4 1 15. 10 4 2x 1 17. ln x 51619. log 2 5 x 321.yDomain: (0, )23.yx 2Domain: (2, )25. 227. 29. log(x 2 y 3 )3 log x 1 2 x 2log 2 y3 log y331. xy ln 10(33. 35. x 1 z)ln 4 1.66096237. x 3 39. y 12541.43.ln 10ln 10x 45. t ln 5 1.43068 ln 1.05 47.1936347. x 10 ln 5 16.09438 2 ln 349. x 2 ln 2 ln 3 7.6376851. x 2.82, x 1.66 53. x 0.17, x 5.05,55. a.x 45.48( 2 b. x 3) x ln 2ln(2/3) 1.7095157. a. x 2, x 1 b. x 2,x 159. a.6-654321–5–4–3 –2 –1 1 2 3 4 5–2–3–4–554321–5–4–3 –2 –1 1 2 3 4 5–2–3–4–5b. One solution-6( 3 2 , )61. a. x 3 2b.63. a. u 1 b. x 0f(x) = log 5 xf(x) = ln(x – 2)xx6