Question

The company Larry works for charges $10 for each service call, plus an additional $5 for each hour spent on the call.

Larry created the graph below to model this relationship, but is not sure if he did it correctly.

Answer 1

The equation to model the relationship between the cost of a service call and the number of hours spent on the call is Total Cost = $10 + $5 * Number of Hours. The fixed cost is $10 and the cost per hour is $5.

Step-by-step explanation:

To model the relationship between the cost of a service call and the number of hours spent on the call, Larry can use the equation:

Total Cost = $10 + $5 * Number of Hours

In this equation, $10 represents the fixed cost for each service call, and $5 represents the cost per hour spent on the call. The number of hours is the variable that represents the amount of time spent on the call. By plugging in different values for the number of hours, Larry can determine the total cost for each call.