Hi Guys!

I have a few questions from Grade 12U Calculus class, I've gone through all the questions and completed them but I'm not sure if I did them correctly....

if someone could please check my answers and let me know if i went wrong anywhere that would be awesome

The height of a ball dropped is given by: h(t) = -4.9t^2 + 450

I scanned my actual work I did instead of trying to type it all out and confusing everyone:

http://i616.photobucket.com/albums/t...ookies/bcd.jpg

Thanks for any help I can get!