1. Please evaluate and explain your answer using a number line: (-2) + (-5) = Did you change direction or go in the same direction? Was your answer on the positive ("+") or negative ("-") side of 0? (please see section 1.1 for further review) 2. Please evaluate and explain your answer using a number line: (-6) + (+2) = Did you change direction or go in the same direction? Simplify by removing unnecessary symbols: _ _ _ _ = _ _ for further review) 3. 4. (please see section 1.2 Evaluate: (-2)3 + (-5+8) / 3 -15 (Please see section 1.4 an 1.5) If you are adding 2 numbers with different signs (direction), how would you find out the sign and number of the answer? Please evaluate and explain: 2 - 5 (please see section 1.2 for further review) 5. Remove grouping symbols and combine like terms: (5c +6d) (please see section 1.9 for review) 6. Add: 8 + |-11| - (-1) + (-5) (please see sections 1.2 and for further review) Simplify: 4(2x - 5) (please see sections 1.6 for further review) When multiplying or dividing signed numbers, count the number of negative signs: 7. 8. 5(2c -d) - Even number of negative signs = + (positive) Odd number of negative signs = - (negative) Evaluate: (-8)(-5) (please see section 1.3 for further review) 9. 10. Evaluate: (-1)(+3)(-2)(-4) (please see section 1.3 for further review) -3 = -1*3 = -1 * 9 = -9 (order of operations) while (-3) = (-3)(-3) = +9 or 9 Evaluate: Z2 - X2 -XY if X = -2, Y = 3, and Z = -4 (please see section 1.8 for further review)