What is the first step in evaluating an absolute value expression?

See below.

Step-by-step explanation:

As per definition:

and

So when we evaluate an expression with absolute value the first step is to simplify what is within absolute value symbols.

The next step to get the quantity of it and if positive number just cancel absolute value symbols or replace it with parenthesis; if negative, then cancel absolute value symbols, replace it with parenthesis and add negative sign.

step-by-step explanation:

(a) the volume of the cone is 20/3 in3

hence, option a is correct.