Suppose 1/4 of people surveyed support changing the school dress code to enforce uniforms. How many people would you have to select randomly, on average, in order to get 20 people who support the new dress code?

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Reflect the point (7,0) across the y-axis

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?