Sam bought a used car. he boasted that he got a great deal since the value of the car when it was new was $1,6000 his friend Derek was skeptical stating that the value of a car typically depreciates about 25% per year and thinks sam did not get a good deal. ​

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4, -4 is the other point it would pass through

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