Powers, Roots and Scientific Notation

It's a Big Universe

Compute the distance to several astronomical bodies, and how long it would take to get there with various modes of transportation.

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Stars and Planets

Imagine you are standing on the side of the highway at night, watching a car approach. When the car is far away, it seems to be one bright light. As it gets closer, you can see that the one light is actually two headlights.

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Weight on a String

Evaluate a complex expression using proper order of operations.

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