Math 017 Materials With Exercises

APPENDIX C:SAMPLE TESTS SOLUTIONS_____________________________________________________________________________________Sample Test 1 (Lesson 1-3) Solutions_____________________________________________________________________________________1. a) 2xy b) x y 2c) xy 43 156. a) 5 b) c) 74 4d) C(B −A) e) x 37. all except 1 − 2xa b ( a b)a b8. 2x y2. c c c33. a) 2 b) −10 c) −16 d) undefined1 b 39. a) b) c)4. a) 0.4 b) −3 c) 0.9y c 45. A B 10. a) −4+2x b) 8x c) 2x 2 d)x3e) −4x_____________________________________________________________________________________Sample Test 2 (Lesson 1-3) Solutions_____________________________________________________________________________________1. x 22.4 3xa) y x b) 5 c) ( b 4)d) x2 643. a) 9 b) 1 c) undefined d) 94. 2275. 0.08596. F 327. a) −2b b) not possible c) x −9d) 6 x 3y e) 6x 3 −4 f) −10 4 n58.5 a a 1 5apossible ways: , 5 , 2 b 2b2 b9. all except: (1+1a) b10. nm−k, mn+(−k), −k+mn11. a) replace with ( x)b) replace with 7c) replace with 1_____________________________________________________________________________________Sample Test 3 (Lesson 1-3) Solutions_____________________________________________________________________________________x1. a) 7 b) 3(2x+5) c) (3x) 28. a) X xb) X 3abc) mX 2v2. a) −(−2x+3y) b) x y9. a) −5−4x b) −12x c) 3xx yd) 2 5 x3. a) addition of x and y b) division of x by y3 6e) 1 x 6c) exponentiation of x d) exponentiation of −4x244. a) 36 b) 15c) −0.0610. If x then ( x )2 and3985. a) 3 b) 10 c) −0.596. a) 0 b) undefined c) 127. all are equivalent except (a): x y 24 9 x2 x thus 22 xSample Tests Solutions 141