Yes, toothpaste can go bad. Over time, the fluoride in toothpaste can break down and become less effective. Additionally, the flavor and texture of the toothpaste can change, making it less pleasant to use. It's generally recommended to replace toothpaste every 2-3 years to ensure it remains effective and pleasant to use. **

The amount of toothpaste in a toothpaste tube can vary depending on the size and brand of the tube. However, a standard toothpaste tube typically contains around 100-150 grams of toothpaste, which is roughly equivalent to 100-150 milliliters. If we assume that the density of toothpaste is similar to that of water (1 gram per milliliter), then a standard toothpaste tube would contain approximately 100-150 meters of toothpaste. **

Assuming the Müller family uses toothpaste twice a day, they would extract approximately 2 ml of toothpaste each time. Therefore, in one day, they would extract a total of 4 ml of toothpaste. This means that a 100 ml toothpaste tube would last the Müller family approximately 25 days. **

No, it is not safe to eat a tube of toothpaste. Toothpaste contains ingredients such as fluoride and other chemicals that are not meant to be ingested in large quantities. Swallowing toothpaste can lead to stomach upset, nausea, and in some cases, fluoride toxicity. It is important to use toothpaste for its intended purpose of brushing teeth and to seek medical attention if toothpaste is accidentally ingested in large amounts. **

The Müller family takes out approximately 1-2 ml of toothpaste from the tube every day. This amount can vary depending on the individual family member and their brushing habits. On average, a pea-sized amount of toothpaste is recommended for each brushing, which is about 1 ml. Therefore, if each family member brushes twice a day, they would use around 2 ml of toothpaste per day. **

Retailers purchase goods from suppliers or wholesalers in a variety of ways. They may place orders directly with suppliers, either through a sales representative or by using online ordering systems. Some retailers also attend trade shows or visit showrooms to view and purchase products. Additionally, retailers may use a combination of methods, such as buying from multiple suppliers to diversify their product offerings. Ultimately, the purchasing process for retailers involves evaluating products, negotiating prices, and placing orders to replenish their inventory. **

Toothpaste can help reduce the appearance of minor scratches on a phone, but it may not completely make them go away. The abrasive nature of toothpaste can help to gently buff out the scratches, but it may not work for deeper or more severe scratches. It's important to use a non-gel, non-abrasive toothpaste and to apply it with a soft, damp cloth in a gentle circular motion. However, for more serious scratches, it's best to seek professional help or consider using a screen protector or case to prevent further damage. **

The length of the strip of toothpaste from a toothpaste tube with 75ml cannot be determined without additional information. The length of the strip would depend on factors such as the diameter of the opening of the tube, the consistency of the toothpaste, and the pressure applied when squeezing the tube. It is not a task that can be solved definitively without conducting a physical experiment. **