An online company sells handmade samurai katana swords. The website costs $ 475 a month to maintain. Each katana costs $ 245 to make, and they sell each katana for $ 555.

A. Create a linear model in the form

y=mx+yowherex

is the number of swords sold per month andy

is the net monthly profit.

b. Using this model, find the number of swords that would need to be sold per month to have a monthly profit of $ 4120.