When copying segments and angles, which step is the same?
draw a ray with one endpoint.
create a point outside of the original figure.
draw a ray from the vertex to another point.
create a point on the original figure.

So don't take my word i'm not exactly a mathematical person but i would assume a. because while selling the soap every month you increase in sells so you would by 11 percent. the you would get the factor 0.89 which if i had to guess would be the monthly profit over 11 probably wrong tho

1/b^3m^3               i don't know why you couldn't do it yourself its not that hard