The Addition Property of Equality justifies Emily's first step. She added 9 to both sides, canceling out the minus 9 while keeping the equation equal.
The line that is horizontal on a graph
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Answer:
60.7%
Step-by-step explanation:
Use division to convert the fraction to a decimal: 17/28 = 17 ÷ 28 = 0.607
Multiply by 100 to get percent value: 0.607 × 100 = 60.7%