What is the factorization of the polynomial below? - x2 - 15x - 56

A. (X + 8)(x + 7)
B. (x+3)(x - 7)
C. -1(x+8)(x + 7)
D. (-x+3)(x-7)

Which inequality comparing two of the expressions is true when 0.7 < x < 0.9

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6

The mean finish time was 185.52 with a standard deviation of 0.327 minute. the winning car driven by chris finished in 185.13. the previous year race had a mean finish time of 110.3 with a standard deviation of 0.106. the winning car that year driven by karen finished in 110.13 minutes. find their respective z-scores. chris - z-score karen “- z-score