300 students attended the dedication ceremony of a new building on a college campus the president of the traditionally female college announced a new expansion programme which included plans to make the college co-educational the number of students who learnt of the new program t hours later is given by the function

Complete Question

The complete question is shown on the first uploaded image

The number of student that have heard the announcement after 4 hours is  

Step-by-step explanation:

From the question we are told that

Now at time t =  0  f(t) = 300 this because at the time the announcement was made the number of student present was

    so

=>                  

So the above  equation becomes

 Now at the given time  t = 2hr  

     So

So the equation is now

Now  at  t =  4 hrs we have that

d. you cannot tell because there are no values shown.