I didn't check your calculations, but your set-ups look fine. I'm assuming for the secant method, you were told to use a time .5 seconds off the other time. Looks good.
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:
Thanks for any help I can get!