A riverboat takes tourists from Ghost Town up river 100 miles to Greensville. The trip up river takes 6 hours, and the return trip down the river takes 2 hours less time. What is the speed of the current and what is the speed of the riverboat in still water? Round answers to the nearest whole number.

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212