1 d. the minimum cost associated with a certain quantity produced. 2  e. 3  none of the above. 4  Assume that in the short-run a firm which is producing 100 units of output has average total costs of $200 and average variable costs of $150. In the short-run the Sure-Screen T-Shirt Company is producing 500 units of output. 2  Its average variable costs are $2.00 and its average fixed costs are $0.50. 3  The firm's total costs: 4  a. are $2.50.
According to Nancy Morgan, RN, at Wound Care Advisor, hydrocolloid dressings, such as Duoderm, need to be changed every three to seven days, depending on the amount of seepage from the wound. Duoderm Signal dressing contains a green line that indicates when the dressing needs to be changed. Keep Learning.
How often should you change your toothbrush. Some people can use their toothbrush repeatedly until they misplace it. The average American only change their brushes 1.9 times a year. The American Dental Association recommends that you change your toothbrush at least four times a year, approximately 3 months and every time you are sick. If the bristles of your toothbrush start flaring before three to four months, then you are using too much pressure to brush your teeth. Dentist believes toothbrushes should be thrown out after roughly 40 to 50 uses. Healthy people should change brushes every two weeks.