Answer:
-48 ft
Explanation:
The unit rate of descent is
-12 ft
-----------
1 min
and so after 4 minutes, the diver will be 48 ft beneath the surface:
----------- * 4 min = -48 ft
48 feet
Distance = rate × time
d = 12 ft/min × 4 min
d = 48 ft
The diver will be 48 feet below the surface.
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