What'a the lowest whole number please ​

Which property is illustrated by the following statement? if hxa rgi, then rgi hxa.

Evaluate the expression for the given value of the variable. | ? 4 b ? 8 | + ? ? ? 1 ? b 2 ? ? + 2 b 3 -4b-8+-1-b2+2b3 ; b = ? 2 b=-2

What is the graph of the absolute value equation ? y=|x|-5