30 POINTS 1.What kind of word would be appropriate for a formal essay? a contraction

slang or jargon

one-syllable

challenging

2.To articulate your thoughts and ideas effectively, what should you understand about expressing them?

formal

discussion

context

informal

1.challenging

2.discussion

Explanation:

16.) true

17.) true

18.) no information in the text

19.) false

20.) no information in the text

21 balloons is the story of professor william sherman's travels.

in 1883, he set off from san francisco for a balloon ride over the pacific and was found a month later floating with 21 balloons in the atlantic ocean. this seemed an astounding feat and everyone wanted to know what had happened.    

professor sherman was loyal, however, and said he would tell his tale first to the western american explorers club in san francisco, of which he was a member. this built up suspense for several chapters before he began to tell of the wonders of his adventures and the amazing island of krakatoa, an island which had just been blown up by a volcano.  

the residents of krakatoa are all millionaires who live under a "gourmet government" of their own devising. we get to see all the incredible adventures that creative people with unlimited resources would create according to the author.