I believe it's B but I am not positive. I'm taking the test right now.
Answer:
Ruth, a cashier at a private bank, strongly believes that no matter how much effort she puts in or how many hours she works overtime, she will not be offered a promotion in the next 10 years. In this scenario, Ruth's beliefs are in accordance with the expectancy theory.
Answer:

Explanation:
Assume the <em>cost</em> equation to be:

Where
is the number of units (wooden baseball bats) produced.
The <em>average cost per unit of production level</em> is the total cost divided by the number of units produced:

You are given that the <em>average cost per unit of a production level of 7,700 bats is $14</em>, then:

You are also given that the <em>fixed costs</em> are <em>$22,500</em>, thus A = 22,500. Hence, you can substitute the value of A in the previous equation and find B:

Now you can complete the cost equation:

And to predict the total costs for 8,600 bats you must subsitute x with 8,600 in the previous equation:

E.) Opportunity cost is the cost associated with giving up one opportunity for the benefit earned by another.
Answer:
(A) Shawn has a comparative advantage in the production of donuts.
Explanation:
Shawn renounce to less goods than Sue when producing donuts.
This meas, Shawn has a comparative advantage in the production of donuts as their cost from the economic point of view are lower.
This do not imply that Sue cannot outproduce Shawn, it means it cost her more than Shawn
For example, if Sue produce 10 Donuts, but to produce donuts resing to produce 20 of other goods, each donut has an opportunity cost of 2
While Shawn can produce 8 donuts and resing to produce 8 of other goods:
each donut has an opportunity cost of 1
Therefore, is better for the overall economy to Shawn produce donuts and trade with Sue for the other good.