Select the correct answer. If the function y = x-31 is a linear function, what is the value of a? OA. 1 OB. 2 O C. 3 OD. 4

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