Khan/khan-exercises — Issue #8348: Functions 3 - Functions 3
Author: KhanBugz
Created: 2011-12-11 15:25:44+00:00
State: open
Labels: chrome, win7, wrong-or-unclear

Reporter: chocolate.gurl94@hotmail.com

For question:
f(x)=-4x
h(n)=-n2-4n+5(f(n))

Find h(f(-3)),
isn't the answer -144 instead of -432?

[functions_3.html?seed=10&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/functions_3.html?seed=10&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/functions_3.html?seed=10&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%22-144%5C%22%22%2C85%5D%2C%5B%22hint-activity%22%2C%220%22%2C79%5D%2C%5B%22hint-activity%22%2C%220%22%2C81%5D%2C%5B%22hint-activity%22%2C%220%22%2C82%5D%2C%5B%22hint-activity%22%2C%220%22%2C82%5D%2C%5B%22hint-activity%22%2C%220%22%2C83%5D%2C%5B%22hint-activity%22%2C%220%22%2C83%5D%2C%5B%22hint-activity%22%2C%220%22%2C83%5D%2C%5B%22hint-activity%22%2C%220%22%2C83%5D%2C%5B%22hint-activity%22%2C%220%22%2C83%5D%2C%5B%22hint-activity%22%2C%220%22%2C84%5D%2C%5B%22hint-activity%22%2C%220%22%2C84%5D%5D)

["-144"]

Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2

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