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OpenStudy (anonymous):
What is the vertex for the graph of y = −3x2 + 18x − 13? (4 points) (−3, −40) (−3, −94) (3, 23) (3, 14)
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OpenStudy (anonymous):
please help!
OpenStudy (anonymous):
do you know derivetives?
OpenStudy (anonymous):
no I know that x is 3 though
OpenStudy (anonymous):
I found that using -b/2a
OpenStudy (anonymous):
ok then keep going
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OpenStudy (anonymous):
what do I do after that
OpenStudy (anonymous):
put the 3 in x then u find the y value
OpenStudy (anonymous):
I did I got 122...
OpenStudy (anonymous):
what is it supposed to be?
OpenStudy (anonymous):
|dw:1335116563339:dw|
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