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Mathematics 10 Online
OpenStudy (anonymous):

i so dont get this! what about find f(-4) for the function below f(x)=-5|x|

OpenStudy (anonymous):

did you get a wrong answer? or how did you try to solve it?

OpenStudy (anonymous):

-20

OpenStudy (anonymous):

f(-4) is shorthand for evaluate f when x = -4. So just substitute -4 for x

OpenStudy (anonymous):

The absolute value of -4 would be 4 and 4 times -5 equals -20

OpenStudy (anonymous):

thank you guys! this poor momma needs a refresher course!

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