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What is important to know about the evolution of invertebrate phyla?
Average Speed
The overall rate of speed of a moving object, calculated as the total distance traveled divided by the total time of travel.
Algebraic Expression
A mathematical phrase that includes numbers, variables, and operation symbols but no equal sign.
Sales Tax
A percentage of the sale price collected by the government on goods and services.
Purchase
The act of buying goods or services.
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