Mathematics, 29.10.2020 04:00 lizzy6629
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=9,140β15x=5. So, 5 people compete in the ninth round.
There are 20 people left after the eighth round and 20β15=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.
Answers: 1
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There are 140 people in a singing competition. The graph shows the results for the first five rounds...
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