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# MATH 151 Homework

MATH 151
Unit 3 Homework

 Section Read Exercises Section 7.1 Radical Expressions and Rational Exponen pp. 498 – 506 p. 507 5 – 65, every other odd, 73, 75, 81 – 97 every other odd, 107 – 115 odd Section 7.2 Simplifying Radical Expressions pp. 509 – 515 p. 515 13, 15, 17, 23, 25 – 57 every other odd, 63, 67, 73, 75, 77, 83, 87, 91, 95, 101, 103, 107, 109 Section 7.3 Operations on Radical Expressions pp. 517 – 526 p. 527 19 – 55 every other odd, 56 – 59 all, 63, 77, 81, 83, 87, 91- 107 every other odd Section 7.4 Radical Functions pp. 529 – 537 p. 537 1 – 4 all, 11, 15, 19, 23, 33, 37, 41, 47, 49, 51, 81, 86 Section 7.5 Equations Involving Radical Expressions pp. 541 – 550 p. 551 13, 15, 21, 25, 27, 31, 35, 37, 41, 43, 45, 47, 51, 53, 57, 61, 67, 69, 73, 75, 81, 127, 129, 131 Section 7.6 Complex Numbers pp. 555 – 561 p. 562 3, 5, 7, 13 – 73 odd Section 8.1 Quadratic Functions and Their Graphs pp. 576 – 586 p. 586 1 – 6 all, 11, 13, 29, 39, 41, 43, 68- 69 bcd only, 79, 81, 83, 85 Section 8.2 Parabolas and Modeling pp. 590 – 597 p. 598 1 – 8 all, 19, 21, 23, 35 – 45 odd, 47, 49, 55, 59 Section 8.3 Quadratic EquationS pp. 601 – 609 p. 610 1 – 8 all, 21 – 27 odd, 37, 39, 43, 45, 51, 55, 59, 71, 75, 81, 83, 89, 93, 95, 11 Section 8.4 The Quadratic Formula pp. 614 – 622 p. 623 1 – 8 all, 11 – 17 odd, 21, 29 – 41 odd, 47, 51, 55, 61, 69, 73,77, 87, 91, 97

Section 7.3
p. 527

Section 7.4
p. 537
2) Graph given on p.537
4)  -∞ , ∞
86) a. 3400 b. It doubles to 680 cfs.

Section 8.1
p. 586
2) The vertex
4) (0, 0)

Section 8.2
p. 598

Section 8.3
p. 610
2) Nonlinear

6) Two solutions, given by the x- intercepts

Section 8.4
p. 623
2) Completing the square
4) b2 - 4ac
6) No, not when b2 - 4ac < 0
26) 1/2, 2

MATH 151
Unit 4 Homework

 Section Read Exercises Section 9.2 Exponential Functions pp. 669 – 676 p. 676 1 – 8 all, 9 – 19 odd, 23 – 31 odd, 33 – 36 all, 37 – 47 odd, 49 – 57 odd, 63, 65, 69, 71, 77, 83, 85 Section 9.3 Logarithmic Functions pp. 680 – 688 p. 688 1 – 12 all, 13 – 61 odd, 63, 69, 71, 91, 95, 97 Section 9.4 Properties of Logarithms pp. 693 – 697 p. 697 1 – 12 all, 13 – 23 odd, 25, 29, 31, 35, 37, 41, 45, 49 – 59 odd, 63, 65, 71, 87, 89 Section 9.5 Exponential and Logarithmic Equations pp. 699 – 707 p. 707 3 – 10 all, 13 – 43 odd, 47, 51, 55 57, 59, 61 – 81 odd, 82, 85, 89, 91, 93, 95, 97, 103

Section 9.2
p. 676
2) Varies
4) 32; 35
6) 7.389; 9.870 approx.
8) 1
34) b
36) a

Section 9.3
p. 688
2) e
4) D: (0, ∞); R: (–∞,∞)
6) k
8) x
10) log25
12) undefined

Section 9.4
p. 697
2) 4
4) log m + log n
6) r log m
8) yes
10) no
12) 0, 1

Section 9.5
p. 707
4) Exponentiate both sides using base 10
6) x
8) x + 7
10) No, log 5 – log 4 =
82) 15