There are 140 people in a singing competition. The graph shows the results for the first five rounds. a. Write an expression for the number of people after x rounds.

Expression:

b. How many people compete in the ninth round?

people

Question 2
Which best explains your reasoning?

There are 20 people left after the eighth round. So, 20 people compete in the ninth round.

When x=9,140−15x=5. So, 5 people compete in the ninth round.

There are 20 people left after the eighth round and 20−15=5. So, 5 people compete in the ninth round.

There are 20 people left after the eighth round. So, 35 people compete in the ninth round.