1 Glycerin, an ingredient in some toothpastes, can interfere with strengthening your teeth. 2  Glycerin layers your tooth in a sticky film that keeps the minerals in your saliva from interacting with your enamel to strengthen it.. Chew sugar-free gum. The gum promotes saliva production, without the sugar that makes weakened enamel worse. Gum with the natural sweetener xylitol doesn't feed the bacteria that weakens your enamel, and xylitol has actually been shown to strengthen tooth enamel.
Demand functions for a straight-line demand curve take the following form: Quantity = a - (b x Price). where a and b are constants that must be determined for each particular demand curve. When price changes, the result is a change in quantity demanded as one moves along the demand curve.
Sometimes what seems like a shift along the demand curve is actually a shift in the overall position of the supply curve. When economic factors make shoes more or less expensive to produce, the entire curve can shift as a result.ometimes what seems like a shift along the demand curve is actually a shift in the overall position of the supply curve. When economic factors make shoes more or less expensive to produce, the entire curve can shift as a result.