I'm stuck on question #6 and I'm not sure if we went over this in class, since I wasn't here on Wednesday. I tried finding the instantaneous rate of change, but I keep getting the wrong answer. Any chance you could explain how to do this?

Hey there! Here's a video that walks through the first question. A few notes:

1) The answer in the back of the book is wrong! I have no idea where their answer came from. I imagine this is not the only error, so let me know if you want me to check your answers.

2) I made a small mistake part way through the video, but later corrected it (I wrote 2x + 7 instead of 2x + 3).

Hey there! Here's a video that walks through the first question. A few notes:

1) The answer in the back of the book is wrong! I have no idea where their answer came from. I imagine this is not the only error, so let me know if you want me to check your answers.

2) I made a small mistake part way through the video, but later corrected it (I wrote 2x + 7 instead of 2x + 3).

I hope this helps!