The number of bacteria can be represented by the equation A(t)=200(0.75), where Alt) is the amount of bacteria in grams and t is the number of days. a. What is happening to the number of bacteria over time? b. What is the initial number of bacteria? c. By what percent is the bacteria decreasing each day? d. How many bacteria will be there be in 3 days? e. When will there be half the initial number of bacteria left? 1 week?