A student is in a 20 week calc class. The function f(t)=50-50e^0.2t f(t) measures the students problem speed in t weeks
-how many problems per hour can a student solve at the beginning of the course
- how many problems per hour can a student solve halfway through the course
-at what rate is the students problem speed increasing 6 weeks into the course
Did you not look at and read my reply?
http://www.jiskha.com/display.cgi?id=1342766530
Once you have the correct equation, take the derivative to find the rate