Answer: Reduce car traffic
conserve energy
minimize trash
Explanation:
This refers to the Gilded Age, first published in 1873 by Mark Twain.
The key issue dividing these three classes were mainly political.
The Mugwumps were members of the Republican party, who refused support to the nominee of 1884 and supported the Democratic candidate.
The Half-breed were rivals of the Stalwarts in the party control. They supported civil service reform and merit appointments to government posts while the Stalwarts favored the spoils system of political patronage. These were the result of a split in the Republican party.
If the half-life is 5 minutes, then 30 minutes is equivalent to 6 half-lives. So, after six successive half-lives, the 400 mg of the radioisotope would have a mass of 400(0.5)⁶ = 6.25 mg.
Thus, A would be the correct answer choice here.
