Use the following information to answer the next $4$ questions.

In the figure below, Columns $(1)$ and $(2)$ provide a portion of a monopolist's production function for a single variable input, labor. Columns $(2)$ and $(3)$ represent the demand function facing the monopolist over this range of output.

$(1)(2)(3)$

Units of Labor Units of Output Price

$3370$ $$10$

$44909$

$55708$

$66007$

$76206$

Question $26(2$ points$)$

How much does the fifth unit of labor add to the firm's total revenue?

Question $26$ options:

$$80$

$$104$

$$150$

$$4,560$

None of the above.

Question $27(2$ points$)$

If the monopolist faces a wage rate of $$300,$ how many units of labor will the firm employ?

Question $27$ options:

$3$ units of labor

$4$ units of labor

$5$ units of labor

$6$ units of labor

$7$ units of labor

Question $28(2$ points$)$

Suppose that the government provides an across$-$the$-$board tax refund for all consumers. How will this change affect the price and output decisions for this firm?

Question $28$ options:

Price will increase, and output will increase.

Price will increase, and output will decrease.

Price will decrease, and output will decrease.

Price will decrease, and output will increase.

Question $29(2$ points$)$

Assume that product prices increase by $$2$ at each level of output. How many units of labor will the firm now employ at a fixed wage rate of $$300.$

Question $29$ options:

$3$ units of labor

$4$ units of labor

$5$ units of labor

$6$ units of labor

$7$ units of labor

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