A driver decends 20 feet in the water from the boat at the surface of the lake. He then rose 12 feet and decends another 18 feet. At this point what is his depth in the water

-26 ft  or 26 ft below the surface

Step-by-step explanation:

Starting at the surface

0

Descending 20 ft

0 -20 = -20

Rose 12 ft

-20 +12 = -8

Descends 18 ft

-8 -18= -26 ft

3/5

step-by-step explanation:

double number line is not a standard concept, so it must have been defined in your textbook. assume top line is numerator.