What is 2 and a 1 half reduced to the lowest term?

Hello,

The answer is (a) 12-2(-1)(6)2(6)=12

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