someone help please!

For each of the situations provided, describe the cost as one of the following: (1) fixed cost, (2) variable cost, (3) mixed cost, (4) step cost (large steps), (5) step cost (narrow steps). Rent for a dental office. Fuel cost of the company's fleet of motor vehicles. The salaries of dental hygienists in a three- dentist office. One hygienist can take care of 120 cleanings per month The wages of counter help in a fast-food restaurant. The salary of a receptionist 1. Fixed cost 2. Variable cost 3. Mixed cost The salary of a receptionist in a law firm. The cost of beer for a bar. A computer service agreement in which a company pays $150 per month and $15 per hour of technical time. Electricity cost, which includes a $15 per month billing charge and an additional amount depending on the number of kilowatt- hours used. 4. Step cost (large steps) 5. Step cost (narrow steps)