Solve this matrix equthen :- is A. x = 63, y = 85, z = 91 B. x = 74, y = 95, z = 70 C. x = 90, y = 87, z = 62 D. x = 87, y = 88, z = 74 50. Find f-1 if f(x) = x2 - 2. A. f-1 = +vx-2 B. f -1 = Vx -2 ; x2-2 C. (" -2-x D. f - x-2 Carefully review your answers on this progress test and make any corrections you feel are necessary. When you are satisfied that you have answered the questions to the best of your ability, transfer your answers to the online test submission page in the presence of your proctor. The University of Nebraska is an equal opportunity educator and employer. @2022, The Board of Regents of the University of Nebraska. All rights reserved.44. Divide (x3 + 12x + 11) by (x + 2) A. x2 + 4x - 8, R 13 B. x2 - 2x + 16, R 43 C. x2 -2x + 16 R-21 D. x2 _ 8, R 12 45. Find the difference [4 6 -37 10 7 -3 8 -9 -1- -9 2 7 A. 6 -1 -6 1 -11 -6 B. 13 4 -10 [-2 -16 2 C. 6 -10 17 -11 -8 D. 14 13 -6 L-1 -7 6 46. Let f(x) = 3x + 1 and g(x) = x2. Evaluate (f o g) (5) A. 169 B. 76 C. 256 D. 32 47. You must answer exactly 12 out of 15 questions on a test. How many different ways can you select the questions to answer? A. 455 ways B. 2000 ways C. 180 ways D. 27 ways 48. You can estimate a tsunami's speed, s, in meters per second by s = 3.1va, where d is the depth of the ocean in meters. Express d in terms of s. A. d = 3.1 B. d = 961 C. d = 9.61 9.61 D. d = s40. Simplify this expression V2 V32 A. 16 B. 4 C. 2 D. 1 41. Write this polynomial in standard form -4c + 8 - 2c + 7c2. A. c2 + 8 B. 702 + 2c + 8 C. 7c2 - 6c + 8 D. 13c + 8 42. Solve the matrix equation -60 -37 617 91 + X - 85 37 A. 82 121 -43 54 B. 82 121 43 -54 C. -12 1 43 54 D. -12 1 43 128 43. Find all the roots of this equation x3 - 3x2 + 4x - 12 = 0. A. 3, + 2i B. -3, + 2i C. -3, +iV2 D. 3, tiv2