Which of the following statements is FALSE? A. The slope of a linear relation also represents the constant of variation.
B. Slope can be calculated as
C. Non-linear relations have the same first differences
D. In the equation = + , the slope is represented by m

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