2 Points Which of the following equations demonstrate that the set of polynomials is
not closed under the certain operations?
O A. Multiplication: (3x4 + x)(-2x4 + x) = -6x8 + x? + x®
X
O B. Division: (x2 + 2x) = (x + 1) = x +
X + 1
C. Multiplication: (x2 + 2x)(x + 1) = x+3x2+2x
O D. Addition: (3 x4 + x°) + (-2x4 + x) = x4 + 2x2

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:

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%