1. Simplify (7a4b) (8a7b6). A. 15a28b6 B. 56a28b6 C. 15a11b7 D. 56a11b7 Hint 2. Simplify (3a4b5c)4. A. 3a16b20c4 B. 7a16b20c4 C. 12a8b9c5 D. 81a16b20c4 Hint 3. Simplify . Assume the denominator is not equal to zero. A. B. C. D. Hint 4. Arrange the terms of 4x2y3 – 2x4y + 3x3y2 – 3 + 2xy so that the powers of x are in descending order. A. – 2x4y + 3x3y2 + 4x2y3 + 2xy – 3 B. -3 - 2x4y + 3x3y2 + 4x2y3 + 2xy C. 4x2y3 + 3x3y2 - 2x4y + 2xy – 3 D. -3 + 2xy + 4x2y3 + 3x3y2 - 2x4y Hint 5. Find (4x2 + 3x) + (7x2 – 5x – 6). A. 11x2 – 2x – 6 B. 11x4 – 2x2 – 6 C. 11x2 – 8x – 6 D. 9x – 6 Hint 6. Find –8x3y2(3xy4 – 2x5 – y). A. –5x4y6 - 10x8y2 - 9x3y3 B. –24x4y6 + 16x15y2 + 8x3y3 C. –24x4y6 + 16x8y2 + 8x3y3 D. –24x4y6 - 16x8y2 + 8x3y3 Hint 7. Find the GCF of 24, 36, and 108. A. 6 B. 72 C. 12 D. 24 Hint 8. Find the GCF of 14a2b4c and 56ab2c2 A. 14a2b4c2 B. 14ab2c C. 56ab2c D. 56a2b2c2 Hint 9. Simplify . A. x6y3 B. x26y3 C. x24y19 D. x3y3 Hint 10. Write a polynomial to represent the area of a square with a side x minus the area of a triangle with a base 2x and a height of 5. A. x2 – 10x B. x2 – 5x C. x2 – 2x + 5 D. 4x Hint 11. Anthony and Sanford each throw a football. The height of Anthony's throw can represented by the equation A = –10x2 + 15x + 22, where A is height and x is the time in seconds. The height of Sanford's throw can represented by the equation S = –9x2 + 14x + 23. At time x, what is the combined height of the throws? A. –x2 + x – 1 B. –19x2 + 29x + 45 C. x2 – x + 1 D. 19x2 + 29x + 45 Hint 12. Simplify 5(2k2 – 3k) – 6k(–k2 + k – 7). A. –6k3 + 4k2 + 27k B. –6k3 + 4k2 – 5k C. 6k3 + 4k2 – 5k D. 6k3 + 4k2 + 27k Hint 13. Which sketch represents A. B. C. D. Hint 14. Which sketch represents A. B. C. D. Hint