Answer:
Dependent: Cost of the ride.
Independent : Number of rides.
Step-by-step explanation:
The independent variable is the variable what we change and the dependent variable is the variables which changes because of that changes.
Here the total cost of ride changes for any change in the number of rides.
Hence, the number of rides is the independent variable and the total cost of ride is the dependent variable
Answer:

Step-by-step explanation:
Divide both sides by 9 to isolate x:

Hope this helps!
Answer:
0, because the house is already painted. If this isn't a riddle then, it should take 4 days because that is half the people, two times the workload per person.