You and three friends are eating pizza with 12 pieces. each person eats the same number of pieces. let x represent the number of pieces each person eats. which of the following is an algebbracic modle of the situation? a) 3x=12. b) 1/3x=12. c) 4x=12. d) 1/4x=12. e) nota

The random variable x has probability density function f (x) = k(−x²+5x−4) 1 ≤ x ≤ 4 or =0 1 show that k = 2/9 find 2 e(x), 3 the mode of x, 4 the cumulative distribution function f(x) for all x. 5 evaluate p(x ≤ 2.5). 6 deduce the value of the median and comment on the shape of the distribution.