is a valid argument
is not a valid argument
For the first argument: 
From the definition of absolute value function
if 
That is every positive number is its own absolute value. Since
,
we can argue that
so the first argument is valid
For the second argument: 
From the definition of absolute value function

This means that

or

no part of the definition allow for the option
. So the second argument is not valid.
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Answer:
B. 4
Step-by-step explanation:
Slope = (-2-6)/1-3) = = - 8/ - 2 = 4
Answer:
n = 1
Step-by-step explanation:
Answer:
$4.00
Step-by-step explanation:
Multiply the 1.6 pounds of grapes by the $2.50 per pound.