Let me tell you what some other people say, though: 1  The EWGâs Skin Deep Database lists it as a 5-6 (or moderate hazard), but trying to find the studies they used for their rating proved difficult, and the ones I did find were the nebulous âborax or boric acidâ test studies.
1 This is so because, my nominal wages have increased by 10% while the average price level (CPI) has increased by only 5%. 2  Thus today (in 2010) with my higher nominal wage ($1100.00) I can buy more than I could buy last year.
So long as the average total cost does not rise, the marginal cost remains below it. When average total cost begins to increase, toe marginal cost rises more than the average total cost. Summing Up: (1) When average cost is falling, the marginal cost is always lower than the average cost. (2) When average cost is rising, marginal cost lies above AC and rises faster than AC. (3) The marginal cost curve must cut the average cost curve at the minimum point of AC.