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OpenStudy (anonymous):
If f(x) = 2x2 − 30, find f(4).
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OpenStudy (eyust707):
Change all the "x"s to "4"s
hartnn (hartnn):
put x=4 what u got ?
OpenStudy (anonymous):
that is 2^2
OpenStudy (anonymous):
it would be 34?
hartnn (hartnn):
nopes, 2(4^2)-30 = 2* 16-30 = ??
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OpenStudy (anonymous):
2
OpenStudy (anonymous):
is that right?
OpenStudy (eyust707):
Yes
OpenStudy (anonymous):
thanks
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