polynomial

Multiple Choice (1 mark each) Record your answers on the multiple choice answer sheet. 1. The graph of f(x) = -(x - 1)(x + 2) has x-intercepts of A. 0 B. -1 and 2 C. 1 and -2 D. 1 and 4 2. Which of the following are true of the degree and sign of the leading coefficient, respectively, for the function f(x) = -(x - 1)(x+ 2)"? A. Degree 2, leading coefficient 0 C. Degree 3, leading coefficient 0 Use the following information to answer the next question. A local university has hosted a track meet on the same day every year since 1960. The table below shows the winning running times for the 100-metre sprint. Year 1960 1967 1977 1980 1991 Winning time (s) | 11.0 10.8 10.5 10.3 10.2 3. Using linear regression, the year, to the nearest whole year, in which the winning time is expected to be 9.8 s is A. 1971 B. 2010 C. 2003 D. 2006