Answer:

Where m is the slope and b the intercept.
Using the information given the variable cost 5.5 per hour represent the slope and the fixed cost 10 represent the value of b and then our model would be given by:

Wher y is the total cost and x the hours rented
Explanation:
For this case we want to model the situation with a general equation given by:

Where m is the slope and b the intercept.
Using the information given the variable cost 5.5 per hour represent the slope and the fixed cost 10 represent the value of b and then our model would be given by:

Wher y is the total cost and x the hours rented