MATH 115 Precalculus MATH 115 FINAL EXAMINATION This is an open-book exam. You may refer to your text and other course materials as you work on the exam, and you may use a calculator. You must complete the exam individually. Neither collaboration nor consultation with others is allowed. Record your answers and work on the separate answer sheet provided. There are 28 problems. Problems #1-6 are Multiple Choice. Problems #7-17 are Short Answer. (Work not required to be shown) Problems #18-28 are Short Answer with work required to be shown. MULTIPLE CHOICE 1. Solve | 7 - 4x 1 2 5 and write interval notation for the solution set. 1. A. [1/2, 3] [1/2, 00) C. (-00, 3] [1/2, 00) D. (-00, 1/2] [3, 00) 2. Which of the following polynomials has a graph which exhibits the end behavior of downward to the left and upward to the right? 2. A. f (x) = 4x'+x+8 B. f (x) =-5x* - 9x -5 C. f (x) =-2x'-3x -x D. f (x) = 3x+7x'-x-5 3. Write as an equivalent expression: 3 log (x + 2) + log 1 - logy 3. A. log (x+ 2)' B. log x' +8 C. 6log(x) +1 log y D. log (3x + 7- y) Page 1 of 7