At the Blue Bank, Barry would earn $159.25 in simple interest in 7 years after depositing $1,300. What rate of simple interest is offered at the Blue Bank?

Ido not know my friend

What can we do about it

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