here is the problem
A theater group is having a carwash fundraiser. The group can only spend $40 on soap, which is enough to wash 40 cars. Each car is charged $5.
a) If c is the total number of cars washed and p is the profit, which is the independent variable and which is the dependent variable?
b) Is the relationship between c and p a function? Explain.
c) Write an equation that shows this relationship.
d) Find a reasonable domain and range for the situation.