6. (04.01) If y = 6x - 3, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs? (4 points)
O {(0,3), (1, -9), (2, -15)}
O {(0, -3), (2, 15), (4, 21)}
O{(0, -3), (2, 9), (4, 21)
O {(0, 3), (-2, 15), (4, 21)

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm

How much is 32 out of 40 written as a percentage? convert fraction (ratio) 32 / 40 answer:   80%