Does anybody have a clue what the answer is?

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

How do i do this? i don’t understand

Which of the following best describes the graph below? + + 2 + 3 + 4 1 o a. it is not a function. o b. it is a one-to-one function. o c. it is a many-to-one function. o d. it is a function, but it is not one-to-one.