Jones hired Smith, a general contractor, to build a garage as an addition to Jones' home. Smith hired Adams, a subcontractor, to do the roofing work on this garage. All the work was done satisfactorily, and at the completion of the work, Jones paid Smith the agreed price. However, Smith never paid Adams for her work. Three weeks after Adams finished her work, she filed a mechanics' lien against the property and demands that Jones pays her for her work.
Which of the following is most correct?

a. Jones need not pay Adams because he has already paid in full for the garage.
b. Jones need not pay Adams because Adams' contract was with Smith, not Jones.
c. Jones should pay Adams even though she does not have a valid lien claim because that is the ethical thing to do.
d. Jones should pay Adams because she can enforce her lien claim against the property.

The correct answer is letter "D": Jones should pay Adams because she can enforce her lien claim against the property.

Explanation:

A mechanics' lien guarantees payments to builders, contractors or subcontractors for work done on a property. In case the owner of the property is not satisfied with the work done the resolution should be established by the very same owner. Properties with liens cannot be sold or refinanced.

Thus, Jones should make the payment to Adams subject to the mechanic's lien but request Smith a refund for the expenses he did not take care of.

the answer is "b.the increased supply will create a surplus. "

the essential thought behind price controls is straightforward - utilize the power of law to modify the equilibrium of a market. for instance, the legislature may choose that the steel business needs to survive, and in this way pass a law to set a value floor on steel. this implies all steel sold must offer at or over the floor value, which must be set over the equilibrium cost for it to have any impact. the switch could likewise happen - the administration can choose that steel is excessively costly and set a value roof underneath its equilibrium value, with the goal that all steel must be sold at or beneath that ceiling.

answer: marginal utility of the fourth brownie is 0.

explanation: marginal utility is the addtional utility gained from the consumption of one more unit of a good. it is given by,

so, marginal utility at the 4th unit will be given by

since, the values are not given here, you can simply find marginal utility at fourth unit by subtracting total utility at 3rd unit from total utility at 4th unit.