What is "assume that good x is a normal good. if the price of good x increases?

If good X is a normal good, it means that as income increases, the demand for good X also increases. This is because consumers have more disposable income to spend on goods and services, including good X.

If the price of good X increases, it will lead to a decrease in the quantity demanded for good X. This is because consumers will now have to pay a higher price for the good, which may lead to them purchasing less of it or finding alternative, cheaper options.

Overall, the increase in price of good X will likely lead to a decrease in demand for the product, unless consumers perceive it as a luxury or necessity that they are willing to pay a premium for.