PPEASE HELP ONLY ANSWER IF YOU KNOW

Step-by-step explanation:

In order to rotate a coordinate point by 90° in the counterclockwise direction, follow the following transformation rule:

(x, y) ---> (-y, x)

Here is the list of the coordinates of the points on the fan blade and next to it is a list of points that are rotated by 90° in the counterclockwise direction:

Normal. Rotated

(x, y)(-y, x)

(3, 1) (-1, 3)

(5, 2) (-2, 5)

(8, 4) (-4, 8)

(9, 6) (-6, 9)

(8, 8) (-8, 8)

(6, 9) (-9, 6)

(4, 8) (-8, 4)

(2, 5) (-5, 2)

(1, 3) (-3, 1)

Simply repeat the pattern for the other two blades.

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

step-by-step explanation:

the answer would be 7