Step 1
Given; Write the positive or negative number that best
represents the given information. 12 ft above sea level.
Step 2
Elevations can also be represented by negative numbers. The elevation at sea level is 0 feet. Elevations above sea level are positive and elevations below sea level are negative.
Thus, the answer will be;
[tex]12-0=12ft[/tex]Answer;
[tex]+12ft[/tex]