pre calc
posted by Anonymous .
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

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

The abs are  and the () are parantheses

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?
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