For both of the contests, the variable is the number of competitors which we can set as x.
Consequently, the equation should be 5.50x+34.60=4.25x+64.60
5.50x=4.25x+30
1.25x=30
x=24
The fee of the contests is the same when there are 24 competitors
I don't under stand what u asked
Answer:
D, John did not make a mistake!
Step-by-step explanation:
The third one because 2(15+5)=2(20)=40