What the restrictions on the domain are

See below.

Step-by-step explanation:

p^2 - 6p - 16       p^2 - 9         ( p - 8)( p + 2)      (p + 3)(p - 3)

 +      =    +  

p^2 - 7p - 18          p + 3           (p - 9)( p + 2)           (p + 3)

   p - 8

=     +   (p - 3)     (answer)

   p - 9

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.