Which equation shows an example of the associative property of addition?

a) (+4 + 1) + 41 = 4 + (i + 41)
b) (4 + 1) + 41 = 4j + (-41 + i)
c) 4i x (-41 + 1) = (41 – 41) + (41 : 1)
d) (41 + i) + 0 = (-41 + i)

Use basic math on google

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