Scientists are beginning to develop the technology to observe other Sun-like stars distant from our solar system. They can even detect large Jupiter-like planets orbiting some of these stars. Other stars appear to have no planets, but astronomers can see the star wobble a bit in space. What do you think this means?

Aswimming pool whose volume is 10 comma 000 gal contains water that is 0.01% chlorine. starting at tequals0, city water containing 0.003% chlorine is pumped into the pool at a rate of 5 gal/min. the pool water flows out at the same rate. what is the percentage of chlorine in the pool after 1 hour? when will the pool water be 0.006% chlorine?