Answer:
1 6/7
Step-by-step explanation:
1 & 6/7
For this case we have that the total minutes spent in yoga classes last week was 165.
Subtracting the 45 minutes of the Saturday day we have:

Those 120 minutes were distributed in the weekly yoga classes
where each lasted 30 minutes.

So, 4 week yoga classes were held
ANswer:
4 week yoga classes were held
Answer:
Yes, it passes the vertical line test
Step-by-step explanation:
This graph has a one to one correspondence and will pass the vertical line test, there fore it is a function