What is the value of the expression x + (–y) when x = –3.8 and y = 1.7?
a. –5.5
b. –2.1
c. 2.1
d. 5.5
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. B.
c. D.
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