Answer:
The first line shows the solutions to n > 0.
The open circle and shaded part after the 0 indicate that n > 0 is represented by the first line.
Given:
The number of ribbons it can sell each week, x, is related to the price p per ribbon by the equation:

To find:
The selling price if the company wants the weekly revenue to be $1,600.
Solution:
We know that the revenue is the product of quantity and price.



We need to find the value of p when the value of R is $1600.



Divide both sides by 100.

Splitting the middle term, we get



Using zero product property, we get
or 
or 
Therefore, the smaller value of p is $2 and the larger value of p is $8.
65kg=143.30047 pounds and 1kg=2.20462262 pounds
Answer:
x^2 - 8x = -5
x^2 -8x +16 =-5 +16
( x-4)^2 = 11
x^2 - 8x+5 = (x-4)^2 -11
Step-by-step explanation: