This document contains three practice problems related to mathematics: 1) The first practice problem asks which inequality is equivalent to 1bac SM biof lycee Omorabiaa (terminologie) 1- 2 7 1x and provides multiple choice answers. 2) The second practice problem involves determining the derivative of a function. 3) The third practice problem describes the height of a ball tossed in the air using an equation relating height and time, and asks how many seconds it will take for the ball to hit the ground.