the statement “the sum of twice a number and 18 is
greater than 25" can be expressed as
a. 2n + 18 = 25 b. 2(n + 18) > 25
ç. 2(n + 18) > 50 d. 2n + 18 > 25

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