You have 100 dollars and can invest into a stock. The returns are volatile and you may get either $120 with probability of 0.4, or $90 with probability 0.6. What is the
expected value of your investment?

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?

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?