$\"\"$

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Hypoglycemia (low blood sugar) and hyperglycemia (high blood sugar) are potentially dangerous and occur when a person’s blood sugar fluctuates by more than $\"\"$ from the normal blood sugar level of $\"\"$ .

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Write an inequality to describe blood sugar levels that are considered potentially dangerous.

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Let $\"\"$ represents the blood sugar levels.

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The inequality is $\"\"$ .

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solve an inequality.

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case(i).

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$\"\"$ (First inequality)

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$\"\"$ (Add $\"\"$ to each side)

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$\"\"$ (Apply additive inverse property: $\"\"$ )

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$\"\"$ (Add: $\"\"$ )

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case(ii).

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$\"\"$ (Second inequality)

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$\"\"$ (Add $\"\"$ to each side)

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$\"\"$ (Apply additive inverse property: $\"\"$ )

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$\"\"$ (Subtract: $\"\"$ )

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Therefore, the solution set is $\"\"$ .

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$\"\"$

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The inequality is $\"\"$ ; $\"\"$ .