Mia spent 10 hours studying for an exam, and she received an A on the exam. Normally, she would have spent that time watching TV instead of studying. Mia figures she could have made a B after studying only 5 hours, but she really wanted an A. What is Mia ’s marginal cost in terms of TV viewing to move from a B to an A on the exam?

Mia's marginal cost is 5 hours

Explanation:

Marginal cost can be seen as the change in total production cost if the output is increased by 1 more unit.

In this case, the marginal cost can be the additional benefit got, (which is a higher grade)  by putting in extra hours of study.

Since Mia can get an A which is the highest grade by putting in 5 hours of study, the extra 5 hours of study can be seen in economic terms as a wasted time resource. This is because there is no grade higher than an A.

Consider the formula

Marginal cost =

Let the cost in this case be the time it takes Mia to study (in hours)

Let the benefit be the additional grade i.e (from B to A) obtained for studying for 1 hour.

For mathematical purposes, let the movement from B to A have a value of 1 unit in terms of benefit

Marginal cost in this case will be  = = 5 hours

Any additional time invested will create infinite marginal costs because there is no grade increase  as shown below

Marginal cost for reading for 20 hours = = ∞

this headline suggests that midterm congressional   elections are at the corner and trump administration wants to activate his base by vowing to clamp down on immigrants and immigration as trump had said during his election campaign around two years ago. when a baby is born in usa, the baby becomes citizen of usa for 85 years and trump wants to end this rule of birthright citizenship to control illegal immigration and this what he said in an interview""we’re the only country in the world where a person comes in and has a baby, and the baby is essentially a citizen of the united states for 85 years, with all of those benefits,” "

anyone me i need