(01.02)
evaluate the following expression using the values given:
find -3a2 - bº + 3c2 - 2b3 if a = 2, b = -1, and c = 3.
numerical answers expected!

What is the smallest integer n such that n\sqrt{2} is greater than 20

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?