Answer :
Recall that definition
[tex]|x|=\begin{cases}-x\text{ if x}\leq\text{0} \\ x\text{ if x>0}\end{cases}[/tex]A)
[tex]\text{Consider }|-80|,\text{ here -80 <0.}[/tex]By using the definition
[tex]|-80|=-(-80)=80[/tex][tex]|-80|=80[/tex]Option A is not true.
B)
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