What is the sum of 6.34 and 9.78

Yea they are simplyfiy the ratios

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

Element a has no reactivity because it has eight valence electrons and cannot gain anymore electron and it wouldn't lose any either