How to write 20/10 as a mixed number

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

Which of the functions graphed below has a removable discontinuity?

Ten members of balin's soccer team ran warm ups for practice. each member ran the same distance. their combined distance was 5/6 of a mile. to find the distance that each member ran, balin wrote the expression below.