1. Write 3x3y5 as a multiplication expression. A. 2(3x3y5) B. 3 · x · x · x · y · y · y · y · y C. (xy2)3 D. 3 · 3 · x · 5 · y Hint 2. Evaluate the expression –2a3 + 3z2 if a = –3 and z = 2. A. -42 B. -180 C. 252 D. 66 Hint 3. You can divide powers with the same base by _____. A. adding the exponents B. dividing the exponents C. subtracting the exponents D. multiplying the exponents Hint 4. The rule for negative exponents states that Which statement is not a correct use of this rule? A. B. C. 10-1 = 1 D. Hint 5. Which is the correct definition for a number expressed in scientific notation? A. A number is expressed in scientific notation when it is in the form a × 10n, where and n is a whole number. B. A number is expressed in scientific notation when it is in the form a × 10n, where and n is an integer. C. A number is expressed in scientific notation when it is in the form a × 10n, where and n is an integer. D. A number is expressed in scientific notation when it is in the form a × 10n, where and n is a whole number. Hint 6. A whole number that has exactly two factors, the number itself and 1, is called a ______. A. square number B. composite number C. prime number D. radical number Hint 7. Which square root from the list below is closest to 14? A. B. C. D. Hint 8. Ilias wants to build a square pond for a fountain in his yard. He wants the area of the square to be as close as possible to 150 square feet, but not over 150 square feet. Find the length in whole feet of the largest square pond that he can build and still have the area be less than 150 square feet. A. 11.5 feet B. 12 feet C. 13 feet D. 11 feet Hint 9. Simplify the expression (jk)(2k)(3jk5). A. 5j2k5 B. 6j2k5 C. 6j3k7 D. 5j3k7 Hint 10. Simplify the expression A. B. C. D. Hint 11. Express 8 micrograms in scientific notation. A. 8 × 10-6 grams B. 8 × 109 grams C. 8 × 106 grams D. 8 × 10-9 grams Hint 12. Simplify . A. B. C. D. Hint 13. Determine if the triangle is a right triangle. Explain. A. Yes; the sum of the squares of the lengths of the legs is equal to the square of the hypotenuse. B. No; the sum of the squares of the lengths of the legs is not equal to the square of the hypotenuse. C. Yes; the sum of the lengths of the legs is equal to the length of the hypotenuse. D. No; the sum of the lengths of the legs is not equal to the length of the hypotenuse. Hint 14. Find the height of the window to the nearest tenth of a foot. A. 13.6 ft B. 4.4 ft C. 19 ft D. 7.5 ft Hint