Answer:
A. Distance and Time
Explanation:
The formula to calculate speed is: 
, where d is distance, and t is time.
Answer:
B. Artists dedicated to exposing rotten parts of America
Explanation:
The Muckrakers were a group of people who rose during the progressive Era. Their main purpose is to expose the corrupt actions that carried out by government officials during that time.
Most of the time, Public use the word 'Muckrakers' are used to describe the journalists who publish the story about corruption to the public.
But, those journalists weren't doing their job alone. Sometimes, artists also create exposé on corrupt political through their artwork. Thomas Nast is one of them. He's known for his caricatures that contain mockery of corrupt politicians such as Marcy Tweed.
Japanese currency. They used rice but later used shell money.
Answer:
Manifest Destiny was the belief that American expansion was destined to expand across the continent. Because of this attitude, Americans invited Texas to join the US as the 28th state in 1845.
Explanation:
Hope this helps, if not I apologize.
