let f(x) = 1/x. Find the number C such that the average rate of change of the function f on the interval (1,c) is -1/10

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

Bplant 3 and 1 because if you look closely at the graph it will show how high it grew it was tricky but you'll get through with it