🔍 Key Concepts

• Use the basic speed formula: Speed = Distance / Time • Understand river mile notation, e.g., AHP (Above Head of Passes) and miles from Cairo to New Madrid • Convert time difference into hours and decimal hours before calculating speed

💭 Think About

• How many river miles did you travel between Cairo and mile 889.0 AHP? Where is Cairo’s river mile reference? • What is the exact elapsed time from your departure at Cairo to 1412 at New Madrid, and how do you express that time in hours? • Once you compute distance and time, what does dividing distance by time tell you about your average speed?

✅ Before You Answer

• Confirm the correct river mile for Cairo on the Lower Mississippi River before computing distance • Be sure your elapsed time is in hours, not hours and minutes mixed • After calculating, compare your numeric result to the closest value among the choices without rounding too early in the steps