Answers edited by Chad
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Bella saw that 7 out of 11 people brought an umbrella to the beach. There were 99 people there. How many of them did not have a beach umbrella?
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The sales tax on an item that costs $35 is $2.10. What is the sales tax on an item that costs $68?
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How do you simplify #\frac { 9} { \sqrt { 21} }#?