Learn To Be brings free online tutoring students around the United States. Volunteer and gain community service hours while helping students who need it./p>

Write differential equations

A chemical is diluted out of a tank by pumping pure water into the tank and pumping the existing solution out of it, so the volume at any time tt is 20+2t20+2t.
The amount zz of chemical in the tank decreases at a rate proportional to zz and inversely proportional to the volume of solution in the tank.
Which equation describes this relationship?
Choose 1 answer:
Choose 1 answer: