Hello! Only one quick problem to solve today, which is number 5 attached. I keep submitting my answers, but I get feedback from my teacher every time asking: "but how did you find the derivative? Where is your work?". PLEASE show all of your work and how you got the derivative to get to the instantaneous velocity. I have also attached an example of a past similar problem that was NOT CORRECT because I did not show enough work, just so you can see what is not enough.