At a local restaurant, the amount of time that customers have to wait for their food is normally distributed with a mean of 46 minutes and a standard
deviation of 4 minutes. Using the empirical rule, what percentage of
customers have to wait between 34 minutes and 58 minutes?

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

That's the answer and the the information