Question

The elevation of city A is 80 feet below sea level; the elevation of city C is 16 feet below sea level. The elevation of city D is 1 over 2 of the elevation of city C.

Answer 1

Complete question:

The elevation of city A is 80 feet below sea level; the elevation of city C is 16 feet below sea level. The elevation of city D is 1 over 2 of the elevation of city C. Part A: Write an expression to represent the elevation, in feet, of city D. Part B: Solve the expression and explain why the answer is negative or positive.

Answer:

-8 feets

Step-by-step explanation:

Given the following :

Elevation of city A = 80 feets below sea level

Elevation of city C = 16 feets below sea level

Distances expressed below sea level are usually expressed as negative. The sea level itself represents a reference point or 0 whereby distances below are expressed as negative a d distances above classed as positive.

Elevation of city D = 1/2(elevation of city C)

= 1/2× 16 = 8 feets below sea level

Hence, - 8 feets (since it is below sea level.