Anyone good with geometric sequences?

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

What we want to do here is simplify the expression. our answer x^6 hope this . have a wonderful evening.how was the solution? let me know in chat! ~brooke