Calculate the average speed of a train that completed a 525 km trip in 4.7 h. Round
your answer to the nearest whole number.

Ibelieve that c. recording would work best.

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