A pelican dives vertically from a height of 3.8 m above the water. It then catches a fish 2.3 m underwater.
a) Write an expression using rational numbers to represent the length of the pelican's dive.
b) How long is the pelican's dive?
a) Answer will be a rational number or integer cause the question asked to write an expression using rational number.
3.8 - (-2.3)
3.8 is positive because it's above water and -2.3 is negative because the pelican went underwater.....like descending.
The answer is a positive because the subtrahend is much bigger than the minuend.
b) The pelican's dive is about 6.1 meters long.