Question

The elevation of city A is 96 feet below sea level; the elevation of city C is 25 feet below sea level. The elevation of city D is 1/4 of the elevation of city C. A: Write an expression to represent the elevation, in feet, of city D. B: Solve the expression and explain why the answer is negative or positive.

Answer 1

City A:  -96 ft

City C : -25 ft

City D: 1/4 city C = 1/4 (-25) = -25/4 = -6 1/4 ft

City D is 6 1/4 ft below sea level

Since City C is below sea level, City D will be below sea level, so its elevation will be negative