1. **State the problem:** Find the difference in elevation between City A at 13,158 feet above sea level and City B at 18,180 feet below sea level. 2. **Understand the elevations:** City A elevation = $+13,158$ ft (above sea level) City B elevation = $-18,180$ ft (below sea level) 3. **Formula for difference in elevation:** Difference = $|\text{Elevation of City A} - \text{Elevation of City B}|$ 4. **Calculate the difference:** $$ \text{Difference} = |13,158 - (-18,180)| = |13,158 + 18,180| = 31,338 $$ 5. **Interpretation:** The difference in elevation between the two cities is 31,338 feet. 6. **Answer for Question 5:** 31,338 ft --- 7. **Question 6:** Insert $<$ or $>$ between the numbers 46 and 0 to form a true statement. 8. **Compare the numbers:** Since 46 is greater than 0, the correct symbol is $>$. 9. **Answer for Question 6:** 46 $>$ 0