Answer:
[tex]E=15n[/tex]
Step-by-step explanation:
Let n be the number of cars you washed
Cost of washing each car = $15
So, Cost of washing n cars = 15 n
Let the total earnings be E
So, the expression becomes :
[tex]E=15n[/tex]
Hence function describes the relationship between your total earning E and the number of cars you wash is :
[tex]E=15n[/tex]