🔍 Key Concepts

• Mississippi River mileages measured in statute miles along the river, not straight‑line distance • How the Memphis Gage location relates to river mile markers near Memphis, TN • How to find the river mile for Redneb Services Dock near New Orleans, and subtract the two mileages

💭 Think About

• Is this question asking for chart (river mile) distance or geographic/straight‑line distance? How does that affect which value is reasonable? • About what river mile is Memphis located, and about what river mile is New Orleans located on the Lower Mississippi River? What is the approximate difference between those mileages? • Compare that approximate difference with the answer choices: which one is closest to your estimated river‑mile separation?

✅ Before You Answer

• Confirm that you are using statute miles along the river (river miles), not nautical miles or straight‑line distance • Verify the river mile at Memphis from a reliable river chart or reference (look for the mileage associated with the Memphis river gage) • Verify the river mile at Redneb Services Dock near New Orleans, then compute: Distance = Downstream mile – Upstream mile