When Joshua's income increases, he purchases more prime-rib dinners than he did before his income increased. For Joshua, prime-rib dinners are Group of answer choices a normal good. an inferior good. an optimal good. a Giffen good.

a normal good

Explanation:

A normal good is one that a consumer buys normally and when there is an increase in his income there is an increase in the demand of this good.

The opposite of this is an inferior good whose demand falls sometimes to zero as income increases. Consumers choose other goods to consume as income increases.

In the given instance where Joshua's income increases and he purchases more prime-rib dinners than he did before his income increased, this is a normal good for him.

the investment was $14,174.196

explanation:

a lump sum means that the father of the example made one deposit and leave it be.

we need to know the value of a capital that generated at 4.05% per year during 28 years the sum of $48,613.24

now clearing the formula to solve for capital we got:

and we reach the answer investment = $14,174.20