The nondiscriminating pure monopolist must decrease price on all units of a product sold in order to sell more units. this explains why (points : 3)
a) there are barriers to entry in pure monopoly.
b)a monopoly has a perfectly elastic demand curve.
c)marginal revenue is less than average revenue.
d)total revenues are greater than total costs at the profit-maximizing level of output.

c)marginal revenue is less than average revenue

Explanation:

According to my research marginal revenue is defined as the extra revenue that will be created by increasing product sales by a single unit. Usually marginal revenue is always equal to average revenue. This is not the case in a monopoly because the price changes based on how much is sold. As the price decreases and more products are sold this causes the marginal revenue to be less than the average revenue.

I hope this answered your question. If you have any more questions feel free to ask away at .

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