Answer: our required equation model will be
11.5x = y
Explanation:
Since we have given that
Let total earnings in dollars be y
Let number of hours worked be x
Since cost of each hour is $11.50
According to question, we get our equation :

i.e. Product of cost of per hour and number of hours 'x' is equal to total earning 'y'.
Hence, our required equation model will be
11.5x = y