Answer:
84 seconds
Step-by-step explanation:
Because if you divide all of that you would get that answer
If we know that 30% of the time is used after 9 minutes we can write this mathematically as:

By solving for x we can determine the total time allowed to play games and so:

The total time allowed to play games is 30 minutes. Since 9 minutes have lapsed 30-9=21 minutes left to play.
I guess it’s A not sure tho
Answer:
. (5,20)
Step-by-step (x,y)=(5,20)