1. The problem asks which measurements fall within the range of 0.1 cm of 7 cm. 2. This means we consider measurements accurate if they satisfy the inequality: $$7 - 0.1 \leq x \leq 7 + 0.1$$ or $$6.9 \leq x \leq 7.1$$ 3. Now, check each measurement: - 6.98 cm: Since $6.9 \leq 6.98 \leq 7.1$, it falls within the range. - 7.03 cm: Since $6.9 \leq 7.03 \leq 7.1$, it falls within the range. - 7.07 cm: Since $6.9 \leq 7.07 \leq 7.1$, it falls within the range. - 6.89 cm: Since $6.89 < 6.9$, it does not fall within the range. 4. Therefore, the measurements 6.98 cm, 7.03 cm, and 7.07 cm fall within the accurate range of 7 cm ± 0.1 cm.