For most products, purchases tend to fall with decreases in consumers' incomes. such products are known as r:
a. inferior goods.
b. direct goods.
c. average goods.
d. normal goods.

Normal goods.

Explanation:

Normal goods are generally have positive income elasticity of demand. This states that there is a positive relationship between the demand for normal goods and income level of the consumers.

Suppose the income of a consumer decreases as a result the demand for normal goods also decreases and if the income of a consumer increases then as a result the demand for normal goods increases.

Therefore, such products are normal goods.

there's 11 people for the 1st position. then, no matter who gets it, there's only 10 left for the second, and then 9 left for the third. 11 x 10 x 9 = 990.   the answer is there are 990 different ways the positions can be filled by these applicants