Variable cost per unit $ 3.00 Computing the fixed cost using the high level of activity: Cost formula: Y= 2. Using the cost formula you derived above, what blood test costs would you expect to be incurred during a mo in which 4,600 blood tests are performed? + Variable cost per unit $ 3.00 Computing the fixed cost using the high level of activity: Cost formula: Y= 2. Using the cost formula you derived above, what blood test costs would you expect to be incurred during a mo in which 4,600 blood tests are performed? +