The viewing window of a certain calculator is the shape of a rectangle
a) let w represent the width of the viewing window in centimeters. if the window is 5 centimeters longer than it is wide, write an expression in terms of w for the length of the viewing window
b) write a symbolic rule that represents the perimeter, p, of the viewing window in terms of w
c) if the perimeter of the viewing window is 26 centimeters, determine the dimensions of the window

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.