I need help with sections 3,4 & 5

10:07 GroupMe A file.groupme.com 11. 3 x (2 +8) - 1 x6 =? 12. 3 x 2 + (8 - 1) x 6 = ? Section 2 (corresponding to Section A.2 of this appendix) 3 1. The fraction corresponds to a percentage of 4 2. Express 30% as a fraction. 12 3. Convert to a decimal. 40 4. 2 + 8 = ? 13 13 5. 1.375 + 0.25 = ? 2 6. 5 x 4 = ? 7. 1 + 2 =? 8 3 8. 3.5 x 0.4 = ? 1 3 9. 5 + 4 = ? 10. 3.75/0.5 = ? 11. In a group of 80 students, 20% are psychology majors. How many psychology majors are in this group? 12. A company reports that two-fifths of its employees are women. If there are 90 employees, how many are women? Section 3 (corresponding to Section A.3 of this appendix) 1. 3 + (-2) + (-1 ) + 4 =?10:07 GroupMe file.groupme.com 9. 24 = 2x + 2 10. (x + 3)/2 = 14 11. (x - 5)/3 = 2 12. 17 = 4x - 11 Section 5 (corresponding to Section A.5 of this appendix) 1. 43 = ? 2. V25 - 9 =? 3. If x = 2 and Y = 3, then XY 3 = ? 4. If x = 2 and Y = 3, then (x + Y )2 = ? 5. If a = 3 and b = 2, then a2 + b2 = ? 6. (-3)3 =? 7. (-4) 4 = ? 8. V4 x 4 = ? 9. 36/19 = ? 10. (9 + 2) 2 = ? 11. 52 + 23 = ? 12. If a = 3 and b = -1, then a2b3 = ? The answers to the skills assessment exam are at the end of the appendix (pages 530-531). A.1. Symbols and Notation Table A.1 presents the basic mathematical symbols that you should know, along with examples of their use. Statistical symbols and notation they are needed. Notation for exponents and square roots is covered separately at the end of this appendix. Table A. 1.10:07 GroupMe A file.groupme.com Section 3 (corresponding to Section A.3 of this appendix) 1. 3 + (-2) + (-1) + 4 =? 2. 6 - (-2) = ? 3. -2 - (-4) = ? 4. 6 + (-1) -3 -(-2) -(-5) =? 5. 4 x (-3) = ? 6. -2 x (-6) = ? 7. -3 x 5 = ? 8. -2 x (-4) x (- 3) = ? 9. 12 + (-3) =? Symbol Meaning Example Addition 5+7 = 12 10. -- 1 8ubtfact(A-68 3 9 . () Multiplication 3 x 9 = 27, 3(9) = 27 +, 1 Division 15 + 3 = 5, 15/3 = 5, 15 = 5 11 - 16 8=7 Greater than 20 > 10 Less than 7