Clark owns a company that sells drones. The amount he pays each of his sales employees (in dollars) is given by the expression 1
0h + 40d, where h is the number of hours worked and d is the number of drones sold. If an employee works 8 hours and sells 4 drones, the employee earns ___ . If an employee works 4 hours and sells 6 drones, the employee earns ___ . If an employee works 12 hours and sells 2 drones, the employee earns ___ .
