Thank you so much for your help. I did have a few more questions through. While trying problems 4b and 4c regarding the tangent line and also problem 5, the software program was giving me many errors.  If you could demonstrate the specific commands I would need to enter for those particular problems I would appreciate it. This would show me where I was going wrong and where I need to go. Thank you for your help so far! I truly appreciate it!

Thank you so much for your help. I did have a few more questions through. While trying problems 4b and 4c regarding the tangent line and also problem 5, the software program was giving me many errors.  If you could demonstrate the specific commands I would need to enter for those particular problems I would appreciate it. This would show me where I was going wrong and where I need to go. Thank you for your help so far! I truly appreciate it!