Question

A deep sea diver’s depth is currently 30 m below the surface of the water.

Which expressions represent a change in depth of d meters?

Choose exactly two answers that are correct.

A. -30d


B. -30 - d


C. -30/d


D. -30 + d

Answer 1

the answer is A and D -30+d but you can also get the answer by multiplying like lets say d=2 30+30=60 and 30*2=60.