For which pair of points can you use this number line to find the distance? A number line going from negative 2 to positive 8. Points are at 1 and 7.
(–4, 1) and (7, –4)
(–4, 1) and (–4, 7)
(–1, –4) and (–4, 7)
(–4, –1) and (–4, –7)?

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