Question

What is the solution set of |–x| = 3.5? {–3.5, 3.5} {–3.5} {3.5} {7}

Answer 1

A

Explanation:

Answer 2

{-3.5, 3.5}

Explanation:

Interpreting

|-x| = 3.5

gives

3.5 = +(-x) or 3.5 = -(-x)

or

x = + / - 3.5

so the answer is

{-3.5, 3.5}