Opportunity cost is what you give up to do something
if you go to the concert, you spent $45 dollars but lose the opportunity to sell the ticket
if you sell the ticket illegally, you get $75 at the cost of not seeing the concert
the opportunity cost of attending the concert=75+45=$120
the opportunity cost is 120 dollars
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Answer:
21
Explanation:
Given that:
The utility function U(x, y) = 
The budget line income is:
105=4x +3y
The equation MRTS is:

where;


and:


∴
Using the equation MRTS:



4x = 12y
x = 12y/4
x = 3y
Replacing the value of x into the budget line income, we have:
105 = 4x + 3y
105 = 4(3y) + 3y
105 = 12y + 3y
105 = 15y
y = 105/15
y = 7
Then, from x = 3y
x = 3(7)
x = 21
Thus, she will consume 21 gapefruits
Answer:
A tax rate of 10.71% should make both both indifferent for investors.
Explanation:
the municipal bonds are income-tax free so we should solve for the tax rate which makes both bonds equaly attractive.
0.075 = after-tax rate
0.084 = pre-tax rate

A tax rate of 10.71% should make both both indifferent for investors.