A person is standing 350feet away from a model rocket that is fired straight up into the air at a rate of 15feet/sec. At what rate is the distance between the person and the rocket increasing (a)20 seconds after liftoff?(b)1 minute after liftoff.

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

Yes the company can use two vans it works