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OpenStudy (anonymous):
Let f(x)=4x-8. Find (f * f)(7)
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OpenStudy (cathyangs):
is the * a multiplication sign or a circle-type sign?
OpenStudy (anonymous):
A multiplication symbol :]
OpenStudy (cathyangs):
then it's: (4(7)-8)*(4(7)-8) which you know how to simplify, right?
OpenStudy (anonymous):
I don't think so because I keep getting an answer of 400
OpenStudy (cathyangs):
that's right. :D
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OpenStudy (anonymous):
I don't think so because i put that it in and it said the answer was 72?
OpenStudy (cathyangs):
...? @.@
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