You subtract 5 from both sides to get n=8
3.22 divided by 14 is .23. .23 plus .15 is .38 cents per candy at regular price.
Numerical hope that helps
So, u would start by expanding the bracket and ignoring the 2 at the moment.
(x+9)(x+9)= x^2-18x+81(using the foil method!
Then u would put 2 at the front to get:
2(x^2+18x+81)
= 2x^2+36x+162
3kg+2kg=5kg
5/$3.25=0.65
price per kg=0.65
