Chapter 5: Exercises with Solutions

Section 5.2 Vertex Form 45563. f(x) = 2x 2 + 7x − 264. f(x) = −2x 2 − 5x − 465. f(x) = −3x 2 + 8x − 379. Evaluate f(4x − 1) if f(x) = 4x 2 +3x − 3.80. Evaluate f(−5x−3) if f(x) = −4x 2 +x + 4.66. f(x) = 3x 2 + 4x − 6In Exercises 67-72, find the range ofthe given quadratic function. Expressyour answer in both interval and set notation.67. f(x) = −2x 2 + 4x + 368. f(x) = x 2 + 4x + 869. f(x) = 5x 2 + 4x + 470. f(x) = 3x 2 − 8x + 371. f(x) = −x 2 − 2x − 772. f(x) = x 2 + x + 9Drill for Skill. In Exercises 73-76,evaluate the function at the given valueb.73. f(x) = 9x 2 − 9x + 4; b = −674. f(x) = −12x 2 + 5x + 2; b = −375. f(x) = 4x 2 − 6x − 4; b = 1176. f(x) = −2x 2 − 11x − 10; b = −12Drill for Skill. In Exercises 77-80,evaluate the function at the given expression.77. Evaluate f(x+4) if f(x) = −5x 2 +4x + 2.78. Evaluate f(−4x−5) if f(x) = 4x 2 +x + 1.Version: Fall 2007