There are 10 roller coasters at 6 flags, and you only have time to ride 3 before the park closes. How many different ways can you create a path to 3 different roller coasters?

Ben is interested in using a source that provides original research, current and developing trends and experts within specific fields. which source should he use?

Earth's atmosphere is unique among the planets and is able to support life because it contains a large amount of a) oxygen b) helium c) methane d) carbon dioxide

Suppose you need to verify how to correctly use commas. you open your english textbook and scan the chapter titles. in which one would you most likely find the information you need? a. correct capitalization b. grasping grammar c. super spelling d. proper punctuation