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Step-by-step explanation:140
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Your welcome
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A set of symbols that expresses a mathematical rule or principle; for example, the formula for the area of a rectangle is a = lw, where a is the area, l the length, and w the width. The American Heritage® Student Science Dictionary, Second Edition.
Step-by-step explanation:
The children's ticket would be $7 each and the adult ticket would be $9.