Need asap find the range of each function for the given domain. 3. f(x) = -2x + 1; {-6, -2, 0} 4. f(x) = x3 + 1; {-2, -1, 3} tell whether the sequence is arithmetic or not. if the sequence is arithmetic, write a function rule to represent it. 5. -19, -11, -3, 5, . . . 6. write a function rule for the area of a rectangle whose length is 5 in. more than its width. what is the area of the rectangle when its width is 8 in.?

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