Given a discrete random variable, x , where the discrete probability distribution for x is given on right, calculate e(x).x - 0 - 1 - 2 - 3 - 4 - 5p(x) - 0.1 - 0.1 - 0.1 - 0.4 - 0.1 - 0.2 a 1.51, 0.763332082 b 2.50, 0.963418643 c 2.90, -0.310732275 d 2.29, -0.158438525 e none

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

7.3

step-by-step explanation:

answer: your correct answer is b. d.

step-by-step explanation: