Swimmers dive up to 60 and 65 feet below the surface of the ocean. write the deaf closest to the surface as an integer.

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