$40 you want to charge enough to pay for them and make a profit.
Answer:
you can get more of one good only by giving up some of another good
Explanation:
A production possibilities frontier shows the opportunity cost of producing one good instead of another. This way, as you follow the curve, the combination of goods will vary, increasing the production of one good but deceasing the production of the other.
Opportunity costs are the benefits lost or extra costs associated to choosing one activity or investment over another alternative. Since resources are scarce, you must always give something up in order to obtain another thing, e.g. you give up your leisure time in order to study.
Answer: d. it is necessary to relate variable cost data to the activity index chosen
Explanation:
The activity index shows how various activities have an impact on the cost of production.
When developing a flexible budget within a relevant range of activity, ome must relate variable cost data to the activity index chosen to ensure that it is indeed variable.
Answer:
0.31
Explanation:
Income elasticity of demand measures the responsiveness of quantity demanded to changes in income
Income elasticity of demand = percentage change in quantity demanded / percentage change in income
Percentage change in income = 
= 2.3
when income was $300, ramen was demanded twice, that is 2/7 times a week. converting to fraction gives 0.29
Percentage change in quantity = 
= 0.72
0.72/2.3 = 0.31
