Instructions: type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.
the table shows a proportional relationship between the number of skeins of yarn and the number of scarves made from the yarn.
skeins of yarn 4 8 14
scarves 2 4 x
a knitter with 14 skeins of yarn can make
scarves.

Consider a rectangle of length l inches and width w inches. find a formula for the perimeter of the rectangle. use upper case letters. p = l+l+w+w (b) if the length and width of the rectangle are changing with respect to time, find dp dt . use dl dt and dw dt and not l ' and w ' . dp dt = 2( dl dt)+2( dw dt) (c) suppose the length is increasing at 2 inches per hour and the width is decreasing at 3 inches per hour. how fast is the perimeter of the rectangle changing when the length is 40 inches and the width is 104 inches?