California National University Functions at Variable Expressions Questions

I am needing assistance with the attached problems and need guidance to help me learn.

Exercises 1.1
Solve Problems 1–6.
15. 2u + 4 = 5u + 1 – 7u
1. 2m + 9 = 5m
6
2. 3y – 4 = 6y – 19
17. 10x + 25(x – 3) = 275
19. 3 – y = 4(y – 3)
16. – 3y + 9 + y = 13 – 8y
18. –3(4 – x) = 5 – (x+1)
20. x – 2 = 2(x – 5)
3. 2x + 3 < -4 4. 5x + 2 > 1
5. – 3x = -12
6. – 4x = 8
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x
6
21.
y
22.
4
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1
2
Solve Problems 7–10 and graph.
5
6
5
7. – 4x – 7>5
8. – 2x + 8 < 4 и m 23. 5 3 m 3 3 2 14. < -4 Solve Problems 5-7 and graph on a real number line. 5. 4y – 3 < 10 6.-1 < -2x + 5 = 3 Review Exercises Work through all the problems in this chapter review and check answers in the back of the book. Following each answer you will find a number in italics indicating the section where that type of problem is discussed. Where weaknesses show up, review appro- priate sections in the text. x - 3 1 1. Solve 2x + 3 = 7x – 11. 2. Solve 12 3 2 3. Solve 2x + 5y = 9 for y. 4. Solve 3x 4y = 7 for x. x - 3 7. 1 - 3 1 2 In Problems 61-72, find and simplify the expression if f(x) = x2 – 4. 61. f(4) 62. f(-5) 63. f(x + 1) 64. f(x - 2) 65. f(-6x) 66. f(10x) 67. f(x3) 68. f(Vx) 69. f(2) + f(h) 70. f(-3) + f(h) 71. f(2 + h) 72. f(-3 + h) 73. f(2 + h) – f(2) 74. f(-3 + h) – f(-3) 5. For f(x) = 2x = 2x – 1 and g(x) = x2 – 2x, find: (A) f(-2) + 8(-1) (B) f(0)•g(4) 8(2) f(3) (C) (D) f(3) 8(2)