28.5 $\leq$ x $\leq$ 29 inches
Work Step by Step
Ideal length is 28.75, length varies by 0.25 ,so add 0.25 to 28.75 and subtract 0.25 from 28.75: 28.75+.25=29 28.75−.25=28.5 Thus; 28.5 $\leq$ x $\leq$ 29 inches
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