7. What is the simplest form of (x3y+)*(8x?y)? A. x11y13 B. -x11y13 C. -*10,12 - D. x11y13 8. Evaluate 3xºy - 2xy3 for x = -2 and y = 3. A. -20 B. 36 C. 48 D. 56 9. Which is the solution set of the inequalityy > 1? A. SS:{1,2,3,4... } B. SS:{-1, -2, -3...} C. SS:{2,3,4,5... } D. SS:{1,0,-1,-2... } 10. What is the sum of 7x2 + 3x – 6 and 20x2 3x + 7? A. 13x4 - Ox + 1 B. 13x2 + 1 oC. 13x2 + 6x - 1 D. 13x2 - x +1 11. What should be multiplied to (4x + 3) to get 16x2 – 9? A. 4x + 3 B. 4x - 3 C. 4x2 – 12x + 9 D. 16x2 + 12x + 9 12. The width of a rectangle is 2/3 its length. If its perimeter is 250, find the width? A. 40cm B. 50cm C. 45cm D. 75cm 13. What is the volume of a cube whose side measures 2x + 1? A. 8x3 + 8x2 + 4x + 1 C. 6x3 + 4x2 + 4x + 1 B. 8x3 + 12x2 + 6x + 1 D. 8x3 + 8x2 + 2x + 1 Soo 14. What is the simplified form of (3xa+1)(2x^)(-x-2a)? A. – 6xa B. 5xa C. -6x D. -6x2+1 - - 15. If you were to construct a building given with a lot that measures (4x – 2)m by
