Ineed some serious my friends i can’t do fractions for life

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

If rt is greater than ba, which statement must be true ?

The equation |pl = 2 represents the total number of points that can be earned or lost during one turn of a game. which best describes how many points can be earned or lost during one turn? o o -2 2 oor 2 -2 or 2 o