Which of the following is true about groundwater? a) groundwater is the biggest fresh water reservoir on earth. b) when the rate of pumping is greater than the rate of infiltration, shallower wells may run dry. c) there is more water stored in groundwater than in all earth’s lakes and rivers combined. d) all of the above

Horizontal asymptote at  tells us that the original graph has been translated down.since  ,  are positive.  also we can say that the point  has a smaller  -coordinate than  .this means that the  transformed exponential function is increasing as it goes to the right. as it goes from  to , the value of the exponential function increases. it goes from to something bigger, . therefore, as  . the left hand would be the side that approaches the horizontal asymptote.so the answer is d