New SAT Math Workbook Episode 2 part 6 potx

... pairs: ( 96) = 80 (2) – 16 (2) 2 = 160 – 64 = 96 ( 96) = 80(3) – 16( 3) 2 = 24 0 – 144 = 96 Note that the equation in choice (C) holds for f (2) = 96 but not for f(3) = 96. Chapter 15 26 6 www.petersons.com 4. ... f(x): g(f(x)) = x 2 + 3 5. (D) f(x 2 ) = x 2 2 , and fx() () 2 = x 2 2 () . Accordingly, f(x 2 ) ÷ fx() () 2 = x 2 2 ÷ x 2 2 () = x 2 2 ·...

Ngày tải lên: 22/07/2014, 11:20

... A 18. C 19. E 20 . B 21 . C 22 . B 23 . A 24 . E 25 . B 26 . B 27 . C 28 . D 29 . B 30. E 31. E 32. C 33. A 34. E 35. D 36. E 37. A 38. B 39. B 40. C 41. A 42. E 43. D 44. D 45. E 46. A 47. E 48. C 49. D 50. ... hail. PART III: PUTTING IT ALL TOGETHER 330 www.petersons.com Quick-Score Answers 1. B 2. C 3. D 4. B 5. E 6. C 7. A 8. C 9. D 10. A 11. D 12. E 13. B 14. C 15. D...

Ngày tải lên: 22/07/2014, 11:20

... acid Original 6 .50 3 Added 4 0 0 New 10 3 6. 10 gallons is 2 3 1 4 − of the tank. 2 3 1 4 83 12 5 12 5 12 10 5 120 24 − − == = = = x x x (answer) 7. xy x xyy xy xy xy −− − () = = = = 2 22 2 40 60 2 220 10 + (answer) 8. ... second year. $ 960 – $1 92 = $ 768 value after 2 years. 2. (E) 3 5 6 2 3 3 4 1 2 5 25 5 981 2 2 =             == = () = ....

Ngày tải lên: 22/07/2014, 11:20

... origin? (A) 2 (B) 2. 5 (C) 42 (D) 43 (E) 5 16. The product of 34 56 and 789 is exactly (A) 27 267 87 (B) 27 267 85 (C) 27 267 81 (D) 27 267 84 (E) 27 267 86 17. Susan got up one morning at 7: 42 A.M. and went ... 0 23 . Which of the following is the product of 4 327 and 5 46? (A) 23 62 5 41 (B) 23 62 5 42 (C) 23 62 5 43 (D) 23 62 5 46 (E) 23 62 5 48 317 www.petersons.c...

Ngày tải lên: 22/07/2014, 11:20

... (2, 0): yxb b b = () +=− = − + = − − 02 20 1 02 2 (slope ) The equation for the line is y = –x + 2. For the pairs ( 2, –1) and (2, 1): yxb b b = () += =+ = −− −− 11 22 1 2 1 2 12 0 () () ) () (slope The equation ... sin45° = 2 2 , set the value of this function equal to 5 x opposite hypotenuse       , then solve for x: 2 2 ;2 ;===== 5 10 10 2 10 2 2 52 x xx . 2....

Ngày tải lên: 22/07/2014, 11:20

... = 1 [a ≠ 0] Example: (2 3 ) 2 · 4 –3 = (A) 16 (B) 1 (C) 2 3 (D) 1 2 (E) 1 8 Solution: The correct answer is (B). (2 3 ) 2 · 4 –3 = 2 (2) (3) · 1 4 2 4 2 2 1 3 6 3 6 6 === Numbers and Operations, ... x 2 + 3x – 4, then f (2 + a) = (A) a 2 + 7a + 6 (B) 2a 2 – 7a – 12 (C) a 2 + 12a + 3 (D) 6a 2 + 3a + 7 (E) a 2 – a + 6 4. If f(x) = x 2 and g(x) = x +...

Ngày tải lên: 22/07/2014, 11:20

... O is the midpoint of AB. x xx y yy + + + + 4 2 2440 6 2 1 62 4 === === , , − A is the point (0, –4). 3. (A) d = ()() = === 84 63 4 3 16 9 25 5 22 22 − ++ + - 4. (D) Sketch the triangle and you ... then (A) x > 2 (B) x < 2 (C) x > 2 (D) 2 < x < 2 (E) 2 ≤ x ≤ 2 8. Solve for n: n + 4.3 < 2. 7 (A) n > 1 .6 (B) n > –1 .6 (C) n < 1 .6 (D) n &l...

Ngày tải lên: 22/07/2014, 11:20

... = xx yy 21 2 21 2 − + ()() - The distance between (–3, 2) and (5, –1) is −− ++3+935 8 64 73 2 2 22     ()     = () () = =2- -1 - B. The midpoint of a line segment = xxyy 121 2 22 ++ ,       Since ... = ()() = () = 1 2 46 1 2 24 12 22 xx x x 5. (C) radius of circle = 3 Area = πr 2 = 9π Exercise 2 1. (A) Area of equilateral triangle = s 2 4 3 Therefore,...

Ngày tải lên: 22/07/2014, 11:20

... noon, he left at 9 A.M. 3. (E) R · T = D 60 0 x 60 0x 65 0 x – 1 2 65 0(x – 1 2 ) The later plane traveled 1 2 hour less. 60 0 65 0 1 2 60 0 65 0 325 325 50 6 1 2 xx xx x x =       = = = − − The ... in cents 10 400 25 25 + - 00 15 150 10 x x = = 4. (D) No of Percent Amount of Quarts · Alcohol = Alcohol Original 18 32 5 76 Added x 0 0 New 18 + x 12 2 16...

Ngày tải lên: 22/07/2014, 11:20

... their squares is 120 ? (A) (n + 1) 2 – n 2 = 120 (B) n 2 – (n + 1) 2 = 120 (C) n 2 – (n + 2) 2 = 120 (D) (n + 2) 2 – n 2 = 120 (E) [(n + 2) – n] 2 = 120 3. Find the average of four consecutive ... a b 4. (D) 4 3 2 2 2 abc d ab ⋅ Divide 2, a, and b. 2 36 22 c d a cd a ⋅= 5. (A) 3 4 1 6 24 22 ac bac ⋅ Divide 3, a, and c 2 . ac b ac b 2 2 2 2 4...

Ngày tải lên: 22/07/2014, 11:20