Posted by Anonymous on .
True or false:
a. 3x5=2x+4 if and only if 3x5=2x+4 or 3x5= (2x+4) ______
b. 2x+7=4 if and only if 2x+7=4 or 2x+7=4 ______
how do you do these and what's the answer?
thanks

pre calc 
bobpursley,
b. How can abs () ever be negative?
a. Isn't that the definition of what happens in an abs function? 
pre calc 
Anonymous,
but is it true or false?

pre calc 
Anonymous,
The abs are  and the () are parantheses

pre calc 
bobpursley,
You have to do your own thinking. I gave you the answer. If something is the definition, it must be true.
Online, absolute function is written abs(xxxx) where xxxx is the argument.
Wasn't this a summer assignment, due in the upcoming week?