Several District of Columbia residents challenged local firearms laws passed by the Washington, D.C., city council. One of these laws banned handguns in the District of Columbia. Another law required all lawfully owned shotguns or rifles to be kept unloaded and disassembled or else disarmed by a trigger lock.

The residents who challenged the laws want to possess handguns and keep them in their homes for self-defense. One of the residents owns a lawfully registered shotgun but wants to keep it assembled and not bound by a trigger lock. They do not object to the idea of a registration requirement for firearms. Also, they are not seeking to carry any firearms outside their homes. The residents claim that these firearms laws violate their rights under the Second Amendment to the U.S. Constitution.

Read the language of the Second Amendment on this page. Dothe Washington, D.C., firearms laws violate this Amendment? Explain your reasons.

State the following Limit Laws. Difference Law

What law does this mathematical equation represent?

indicate the examples below that illustrate the first law of thermodynamics.

Assume triangle $ABC$ has standard labeling and complete the below.

Decide whether the law of sines or the law of cosines should be used to begin solving the triangle.

$$a, B, \text{ and } C$$

Describe Hooke’s Law in your own words.

What should a citizen do about an unjust law?

Prove the second absorption law by showing that if A and B are sets, then A ∩ (A ∪ B) = A.

State the first law of thermodynamics in terms of
(a) the energy of the universe;

Which law forbids the attainment of the temperature of absolute zero?

Write an equivalent expression using an associative law.

$$-7(a b)$$

In some states, a driver of a vehicle may not use a handheld cell phone while driving. In one state with this law, 250 randomly selected drivers were surveyed to determine the association between drivers who know the law and drivers who obey the law. The results are shown in the table below.

$$\begin{array}{c} \\ \qquad \qquad \text{Knows the Law} \\ \begin{array}{|c|c|c|c|} \hline \text { Obeys the Law } & \text { Yes } & \text { No } & \text { Total } \\ \hline \text { Yes } & 160= & 45= & \\ \hline \text { No } & 25= & 20= & \\ \hline \text { Total } & & & \\ \hline \end{array} \end{array}$$

What is the relative frequency of drivers who know and obey the law?

What is the importance of having a written law code?

What relationship does Gay-Lussac’s law express?